A 40+ Year Habit We Just Can’t Break!


No one loves customer feedback more than AY so when the opportunity arose to stop in and chat with Allen Carrick of Hydraulics Unlimited, of course we jumped at it!Hydraulics_Unlimited_Cylinder_Repair

Hydraulics Unlimited has been a loyal customer since 2010 and we were not only curious how they genuinely feel about our seals & service but we were also enthusiastic to see our seals in action and get a thorough understanding of what we can do to better support their needs.

Allen was a good sport about answering our standard customer service and quality questions and affably showed us around the hydraulic repair shop; showcasing some of the more interesting repair requests.


20170505_110153_HDRThe demand for a fast turnover of hydraulic repairs places the importance of receiving assorted sealing components promptly in the high-priority category.  Often, their repairs are assured a two day turnaround so Allen needs to receive his order within that small window to ensure his customers’ satisfaction.  AY Seal & Packing understands this is crucial to their productivity and takes measures to safeguard the accuracy and expedition of all of the Hydraulics Unlimited orders.




“Why did I switch from Hercules to AY?
Pricing, reliability & service!”

 We have always prided ourselves on our knowledgeable and friendly, (and never automated), customer service and that resonated in Allen’s responses to our service questions. On the occasion that a component is not available, our staff quickly assesses a customer’s sealing needs to offer a suitable alternative part and that is something many customers, including Allen, appreciate when calling AY.Hydraulics_Unlimited_Part_Request

We are always striving to improve convenience and utility for our customers so we
asked Allen if there is a component, not readily available, that would help to consolidate his seal orders. His request was that we carry self-aligning bushings & bearings.  Our sales manager, Bruce MacIntyre, is currently researching the most efficient options for distributing these items so that Hydraulics Unlimited and other hydraulic cylinder repair shops can also benefit from the accessibility.



When our customers speak, we listen!
It’s a fundamental quality that AY has practiced for over 40 years!

What solutions can we engineer for your company?


Sales & Marketing just got upgraded!

Russ_MoserPlease join AY in welcoming our new Global Sales & Marketing Director, Russell Moser!

Russell Moser has nearly 32 years of experience as a Business Leader with large multi-national Industrial Electronics corporations. He earned his Bachelors of Science degree from the Pennsylvania State University in Electrical Engineering and is currently a Senior Member of IEEE and a voting member on UL Standards Development Committee 1449. Having started his career in engineering where he learned the processes from the voice of the customer through development and manufacturing to life cycle management.

His drive to success led him to branch off into several Senior Management roles where he learned all aspects of business processes. He has also forged several technology startups. When Russ isn’t crunching numbers and streamlining our sales & marketing operations, he enjoys weight training, driving on the beach in the outer banks, playing guitar, painting, making short films, watching his daughter compete in her equestrian competitions, water skiing with his son and doting on his daughter’s terrier mixes, Effie & Albus.

Welcome to the AY family, Russ! 

Don’t know who your representative is? Head to the AY website & view the territory map!

“When quality & reliability matter most, call AY 1st!”

Hydraulic ‘Stop-Leak’ Additives: Risk or Rescue?

Is Stop Leak a Quick Fix or The source of future problems?You’ve got an older, nickel-and-dime type piece of equipment with a leaking hydraulic cylinder. Should you try a ‘stop-leak’ additive instead of pulling the cylinder and replacing the seals? Maybe. If it’s a log-splitter, then there’s little risk versus a big potential reward. But if the equipment is a truck crane or an excavator, you’d better pull the cylinder!

The use of stop-leak additives is a topic of controversy predominantly because there is insufficient information publicized on the negative impact it could have on your equipment in the long run. Most stop-leak products are comprised of petroleum distillates which cause hydraulic seals to soften and swell in addition to potentially contaminating and corrupting the wet clutches. While this reaction may fix the leak by way of plugging it with the seal material, it is a short lived approach that will most certainly re-emerge in a matter of weeks or months and inevitably forcing a complete overhaul of your hydraulic system anyway.

However, even if the stop-leak works as advertised and doesn’t cause seal deterioration, the root cause of the leak remains. So you need to decide:

  • If a total failure occurs, what is at risk?
  • Do you expect the equipment to last much longer?
  • Is the leak a warning sign of worse things to come?
  • Can a cylinder refurbishment now save me money in the long run?
  • Did I use the correct seal(s) for the job?

The best strategy to prevent leaks in the first place is to ensure your components aren’t exposed to chemicals and conditions that could significantly impact the wear and life of your seals and cylinders.  In that respect, thoroughly review the specifications for replacement seals in comparison to the application. Installing a seal or material that cannot handle extreme temperatures or pressures, for instance, is a leak waiting to happen.  Making assumptions about seals in identical components within the same piece of equipment can be a set-up for failure as well.  Seals that work efficiently for one cylinder in the front of a machine may not be compatible in its rear cylinder when taking into account the differences in pressure fluctuations from one component to the next.

Periodic inspections are also pivotal in catching leaks early. Too often operators take a passive approach to leaks by considering a leak to be nothing more than a nuisance and ignore it until the next scheduled maintenance.  Hydraulic systems continue to operate safely even when leaking, at first. By the time an operator notices the difference in performance; extensive damage has already taken place.

The vulnerability of the rod seal alone can create a domino effect that can lead to the wiper seal allowing harsh contaminants into the hydraulic system ultimately causing seal and system failure.   It is crucial that the seals not only prevent the leaks from happening but also assist in lubricating the hydraulic system to avoid overheating and pressure spikes.  If a leak is substantial enough, this event can occur rather quickly.

Allegheny York offers comprehensive technical assistance to assist our customers in ordering the right seal for each application.  With over 22,000 catalog items, how can you be sure you are selecting the right seal, and the right material for that matter, for your next repair? Our engineers will review seal specifications in relation to the equipment particulars as well as the scope of the work and environmental circumstances to provide you with a concise sealing solution.  We want to save our customers the time and hassle of unnecessary, and costly, repairs. Stop searching through endless websites hoping to find the right seal for your machine. Allegheny York prides itself on our impressive 98% fill rate. We will have your component in stock – even those hard to find seals!  When you need answers right away to get your equipment back to making a profit, call AY first!

800-258-3851   or       sales@alleghenyyork.com


Chip Konrad

Content: Chip Konrad President & CEO of Allegheny York

How to Choose a Seal to Repack your Cylinder


With over 45 years in the hydraulic & pneumatic seal business, Allegheny York has seen advancements in material, design and availability throughout the years.  In the 1970’s & 80’s duck and rubber vee packing was a popular commodity.  As time went on, the Parker Polypak surpassed the demand for vee packing due to its level of performance and cost ratio.  In the 90’s, the BS Rod seal, a Urethane double lip non-symmetrical rod seal was invented by Parker Prädifa and that has continued to reduce the level of vee packing we sell for new equipment.   Generally speaking, there haven’t been any truly revolutionary jumps in the actual design of seals.  What have been improving are the materials.  Material advancements have really helped to reduce friction which is critical for a multitude of reasons in a sealing application.  Seal design and material are paramount decision factors that should be considered when designing or repairing equipment.

While our company manufactures seals for many OEM’s , our core focus is supplying the Industrial Hydraulic and Pneumatic Repair business with cost effective aftermarket solutions that can often improve performance a longevity.  When replacing the OEM seals it is important to consider that the OEM does not always install the most expensive, top quality seal for the application.  While I am sure that every engineer designing for large OEM equipment would love to use top shelf seals, those decisions are often made based on profit margins.  Large cylinder OEMs can save a significant amount of money by installing a seal that costs 20% less than a seal that is a superior design or material.  While the savings to an end user can be as minimal as $2.00, that could translate into millions of dollars for the OEM.  However, when considering the average contractor owns older equipment, is it really worth their time to replace their equipment’s seals with the standard OEM components for a mere savings that could, in the end, cost them the longevity of their seals? Considering the cost of the rebuild, the downtime, and the fact that the replacement seal will outperform better and last longer, it warrants the time to investigate what really is the best seal for the application.  Most people do not consider these types of things when they replace their seal kits.  The prevalent wisdom is that the OEM seal is better than a seal procured from an after-market source.   Our 45 years in the seal business has shown us that the seal profile, and the material have made that theory nothing more than a myth, in most cases.

With over 22,000 catalog items, how can you be sure you are selecting the right seal, and the right material for that matter, for your next repair? Although Allegheny York prides itself on our friendly, very knowledgeable, and always live technical support, we’ve devised a user-friendly breakdown highlighting the features of the most commonly used hydraulic cylinder seals & their respective applications, as well as material specifications, to assist you. While this is in no-way a complete listing, it should give you a basic idea of what seals and materials perform best under specific applications.

Commonly Used Hydraulic Cylinder Seal Types & Features



The O-ring’s simple & inexpensive design remains a popular and universal choice for sealing static and dynamic hydraulic systems. It seals efficiently in both single and double-acting cylinders and can be manufactured in a wide range of elastomers and polymers. O-ring energizers can also be added to rod seals to increase resilience to further maintain sealing contact under low pressures or vacuum applications.

One of their few drawbacks is their inability to withstand extreme temperatures. In colder temperatures, they can become brittle and even crystalize. Prolonged exposure to excessive heat forces the seal to contract and allow leaks.

Nitrile, Ethylene-Propylene, & Silicone are the most common materials used in O-ring manufacturing but they can also be manufactured from high-performance elastomers.

Temperature Range: (Elastomer) -76°F to 599°F & (PTFE) -65°F to 500°F


 Head Seals

The symmetrical design of the Head Seal eliminates the potential for improper installation or damage during the process while making a marked improvement on efficiency with the standard use of O-rings and backups in cylinder heads. Cylinder head seal failure is often caused by O-ring back-up blow-out and pinched back-ups. The static head seal was designed to combat this issue to produce a better performing and dependable solution.

Temperature Range: -65°F to +200°F



Gaskets create a reliable, cost-effective barrier between two surfaces in conjunction with mechanical seals to prevent leaks while under compression. Initially, asbestos was the standard material used for manufacturing gaskets in high pressure steam systems but due to the obvious health risks associated with asbestos, compressed non-asbestos fibers, (CNAF), were implemented to provide a better, healthier alternative. Gaskets are now available in a diverse amount of materials including Non-asbestos, cork, fiberglass, felt, foam, rubber, adhesive backed foam, closed cell sponge rubber, graphite, silicone, vegetable fibers and many more. Just keep in mind that the selection of material for the gasket in relation to the application is critical to its efficiency.

Temperature Range is dependent upon material.


 Piston Seals

Piston seals create a pressure barrier, preventing fluids from passing over the cylinder head while the pressure pushes down on the piston. This radial seal can be used as a single or double-acting seal and is vital for maintaining the position at rest (static) and controlling the motion of the cylinder. It can be combined with wear rings to provide a longer life and enhance leak prevention capabilities. On average, non-symmetrical piston seals are slightly smaller in diameter than the actual groove diameter so that as the seal stretches into the groove, a tighter seal is formed.

Temperature Ranges vary upon design and material.


 Rod Seals

Also referred to as a “shaft seal”, this seal is placed externally to the cylinder bore and is critical to the functionality of any type of power equipment. Its main function is to prevent fluids from leaking externally by forming a pressure barrier. It also maintains the operating fluid inside the cylinder by regulating the fluid film on the surface of the piston rod which prevents rod corrosion. This action subsequently lubricates the wiper seal, as well as the rod seal, and then receives the lubrication film upon retraction of the rod. Additionally, rod seals can be combined with a buffer or wiper seal for maximum sealing efficiency.

Temperature Range: -22°F to 230°F depending on material and design


 Buffer Seals

Buffer seals are uni-directional rod seals that safeguard & improve rod seal performance by reducing the fluctuation, or spikes, in pressures; allowing the rod seal to perform with a more consistent pressure change all while ensuring that the rod is adequately lubricated. They’re engineered to allow for a dependable seal within the sliding movement of the cylinder’s head and piston rod when used in conjunction with a secondary rod seal.

Temperature Range: -40°F to 400°F depending on material


 Wiper Seals

The Wiper Seal is also referred to as a “Scraper Seal”.  This tight-fitting, effective seal is often used with secondary seals to enhance the seal-ability, reduce pressure traps and prevent outside contamination. Dirt, non-compatible fluids, and dust can damage cylinder seals in addition to the cylinder bore, rod & wall which will ultimately lead to cylinder failure. The main function of the wiper seal is to block those external contaminants from entering the hydraulic cylinder assembly altogether by wiping the rod clean while simultaneously accepting the lubrication film upon retraction.

Temperature Range: -65°F to +200°F depending upon material


 Guide Rings

Guide Rings, also known as “Wear Rings” or “Guide Bearings” are used to guide the rod and piston to prevent damage caused by metal to metal contact between cylinder components; subsequently reducing heat and pressure build-up. They maintain a centered position for the rod and piston while absorbing strong transverse forces; which is crucial to the performance of the hydraulic system.  Additionally, they can dampen the mechanical vibrations and sound of noisy hydraulic systems. Guide rings also counter radial load caused by side loading and ensure a reduction in seal extrusion gaps to obtain optimal seal performance and leakage control.  The most common materials for Guide rings are Nylon, bronze-filled PTFE & glass-filled PTFE and they are typically available in step, angle & butt cut styles.

Temperature Range: Dependent upon material


 Back-up Rings

Back-up rings are designed to reinforce primary seals to prevent extrusion into a clearance gap and improve system pressures. Although they are more commonly used to back-up O-rings, they can be used in conjunction with a multitude of sealing products and in static and dynamic systems. When used with Guide Rings, they effectively offset the effects of a reduced pressure rating and can increase seal life and performance at higher pressures. They can be manufactured in a variety of materials such as rubbers, polymers, elastomers, thermoplastics and even natural materials and are available in a spiral or solid design.

Temperature Range: -325°F to +500°F depending on material.


 Oil Seals / Rotary Shaft Seals

Oil seals, also known as Rotary Shaft Seals and Radial Lips Seals, are a very popular dynamic dual-lip seal used in a wide variety of pumps and motors for its ability to seal high speed rotating shafts and bores and applications with low pressure lubricants.  The main purpose of the Oil Seal is to retain the bearing lubricant and repel contaminants and moisture that would compromise the hydraulic system. There are a multitude of style variations that generally utilize a rubber sealing lip to lightly contact the rotating shaft and a metal case to close the gaps between the stationary and moving components. They can be supplied in conjunction with a metal tensioning spring, secondary wiping lip, end caps or auxiliary devices. The most common materials used in manufacturing Oil Seals are Nitrile, PTFE, silicones, elastomers and Ethylene Propylene.

Temperature Range: -58°F to 400°F depending on material

Materials Commonly Used in Seal Manufacturing

This is a listing of the more common categories of materials used in seal manufacturing. This is by no means a complete listing of the materials we have available at Allegheny York. Please refer to our Materials Handout for a more through listing of materials, descriptions, colors and codes to use when ordering.



Polyurethane’s wear, flexibility and extrusion resistance make it a popular choice in the industry. It is highly resistant to petroleum oils, hydrocarbon fuels, oxygen, ozone and weathering yet can deteriorate quickly when exposed to acids, ketones and chlorinated hydrocarbons. It can be sensitive to humidity & water over 200°F.  It is an preferred choice for use in oil based hydraulic fluids and can withstand pressures up to 6000psi.

Temperature range: -65°F to +200°F             40 to 90 Hardness Shore A.

Ethylene Propylene


EPDM is a rubber-like elastomer that is typically used in systems with high water temperature, steam or brake fluid designs. It is also highly resistant to UV, ozone exposure and weathering which makes it an excellent choice for use where environmental elements are a consideration. The drawbacks to this compound is a  low resistance to mineral oil based solvents found in oils, greases & fuels but its counterbalance is its excellent working temperature range.

Temperature Range: -40°F to 300°F  40 to 95 Hardness Shore A


(Parker proprietary polyester elastomer)

Parker’s® trademarked elastoplastic material compound features an exceptionally high tear strength & abrasion resistance and can be utilized in applications with petroleum based fluids, water based fluids, phosphate ester fluids and some chlorinated fluid.  Polymyte can be used in applications where extrusion is present due to its high durometer but it is not compatible with cresols, phenols and concentrated acids.

Temperature range: -65°F to +275°F

Natural Rubber


Derived from the juice of the Hevea (latex) tree, this material displays good resistance to organic acids and alcohols. It exhibits a low compression set and a high resilience, abrasion, and tensile strength in addition to a unique vibration dampening quality. However, wear is often compromised when considering the lack of resistance to sun and UV exposure as well as petroleum oils.

Temperature Range: -58°F to 158°F   40-90             Shore A Hardness

Nylon/Engineered Resins

Nylon is a very popular choice for engineered plastics for its excellent physical and mechanical properties. It features a high tensile and compressive strength juxtaposed with durability, heat deflection and abrasion resistance. It is food safe but used more often in wear rings for bearing support and in auxiliary devices for extrusion resistance.

Temperature Range: -58°F to 230°F



Nitrile is a synthetic copolymer that exhibits excellent tensile strength & resistance to abrasion, compression, tears & extrusion. Its oil resistant properties make it a great choice for use in water based applications, (Steam below 212°F), and anywhere oil resistance is required. Its limiting factors include a low resistance to weathering, sunlight & ozone and has a shelf life of 15 years.

Temperature Range: -30°F to 250°F                          40-90 Shore A Hardness

Fluorocarbon Elastomers


Also known as Viton®, Fluorel®, Tecnoflon®; Fluorocarbon elastomers are the most resistant of all rubbers to chemical and heat exposure. They are suitable for use with most hydraulic fluids except ester-ether based fluids. With an outstanding resistance to UV rays and weathering, it exhibits phenomenal wear resistance and an unlimited shelf life.

They are generally compatible with hydrocarbons but are incompatible with ketones and organic acids such as acetic acid.

Temperature ranges -20°F to – 446°F                        55-90 Shore A Hardness



Fluorosilicone provides the temperature stability of silicone with an impeccable resistance to hydrocarbon fuels, petroleum oils, and diester based lubricants which is why it’s widely used in jet fuel applications when dry-heat resistance is necessary. Fluorosilicone also features an extremely low compression set and an unlimited shelf life.

Temperature Range: -75°F to 400°F

40 to 80 Shore A Hardness



Demonstrating a low coefficient of friction, this material eliminates the possibility of stick-slip effects in dynamic sealing applications. The wide temperature range of PTFE, also known as Teflon®, allows for continuous use even at temperatures up to +600°F. Equally impressive is its strong chemical resistance even at elevated temperatures and pressures. Combining those features with its capability to be utilized in dry running applications through its self-lubricating feature makes it a great all-around choice for sealing components.

Temperature Range: -95°F to +480°F



Silicone is an elastomer used widely in the food and medical industry for its lack of taste and odor. Its excellent compression set resistance; wide temperature range and superior flexibility make it a great choice for a multitude of applications. Silicone is resistance to sunlight, UV exposure and weathering in addition to most mineral, vegetable, engine and transmission oils.

Temperature Range: -85°F to 400°F

20 to 80 Shore A Hardness



This synthetic rubber compound features a good resistance to petroleum oils, low compression set and good tensile strengh. It is resistant to weathering, sun and the ozone as well as ammonia, freon, & oxygen making it a popular choice for refrigeration and cooling systems when considering its ability to maintain flexibility in a wide range of temperatures.

Temperature Range: -65°F to 300°F

Allegheny York has one of the largest inventories of hydraulic and pneumatic seals in the country in both inch and metric sizes.  In a world where many companies are reducing their inventory we provide our customers with a 98% fill rate for all catalog items. But for those repairs that require a custom sized component or exotic materials, be sure to visit our Custom Components Manufacturing Section or contact us today to talk to one of our engineers about your next project. We also have an online component request form available on our website!


Chip Konrad


Content: Chip Konrad

President & CEO of Allegheny York







(James Walker Elastomer Engineering Guide, 2016) https://www.jameswalker.biz/de/pdf_docs/148-elastomer-engineering-guide(Fluid Power Seal Design Guide,2015)  https://www.parker.com/literature/Engineered%20Polymer%20Systems/5370.pdf

“The True Cost of Duck and Rubber Vee Packing”

The History of Vee Packing in Fluid Power Systems

CNC_lineEarly Fluid Power systems from the late 1600’s through the first part of the 20th century were focused heavily on Steam Power. Fluid Power Seal technology at that time was literally using ham hock rinds compressed into the required sealing area. This became known as “packing” and the name is still used commonly to this day. “Washers” were cut to fit the piston rod, essentially packing the space where it entered the cylinder in an area referred to as the “stuffing box”. Continual pressure on the washers was implemented through means of a bolted flange and tapered face follower which in turn caused the washers to press on the rod, establishing a seal.

In 1928, Garlock Palmyra invented Vee Packing and coined the phrase “Chevron” Vee Packing.  Vee Packing would become a tried and true seal of modern fluid power for the next several decades. Palmyra’s Vees were made of Duck and Rubber tubing. This packing worked so well, that it revolutionized the fluid power industry and became the prevalent packing in industrial hydraulic and pneumatic systems for the next several decades and still is used today by some OEM’s.

There were certainly many manufacturers of Vee Packing over the years which caused a041 variety of names for Duck and Rubber Vee Packing. In the fluid power business, Vee Packing is often referred to by many names such as V-rings, Chevron® Vee Packing or Chevron® stack sets.  The fact is Vee Packing is a fantastic, (and at the time, revolutionary), style of seal. It is comprised of a set of multiple highly adaptive lip seals, including a male and female adapter on the top and bottom, for use in sealing the rods and pistons. The Vees are tapered to snap into the housing during installation to provide a quick and effective seal. They are available in a multitude of fabrics, rubbers and a wide assortment of other compounds such as Duck & Rubber, Neoprene®, Viton® & more to contend with key factors such as temperature and fluid compatibility.

Is Vee Packing a Quality Seal Compared to Modern Day Seals?

The US Military believes so! Vee Packing is still relied on by the US Military to seal a Anti aircraft missile systemvariety of its critical fluid power systems. It is no secret that US Military weapons systems contain some of the most advanced technology in the world. Consider the fact that many of these systems still utilize a 90 year old seal design that was the retrofit to pork rinds. If that is not a testament to quality and relentless reliability I don’t know what is.

In the commercial fluid power industry we still see OEM’s utilizing Vee Packing. Perhaps it is reliability that is the reason why telescopic cylinder manufacturers like Custom Hoist®, & Hyco® have relied on Vee Packing for years. These cylinders often are used in life-critical applications, where failure could be catastrophic, yet Vee Packing is still in many of their cylinders today.

Why is Vee Packing Pro-Duck-ion Declining Throughout the Industry?   

So why are we experiencing a decline in Vee Packing throughout the fluid power Vee_3D_Renderindustry? There is no doubt that modern materials and technology have advanced the sealing products produced by large seal manufactures Parker Seal, Hallite and Trelleborg. If you look at the advantages of the design of Vee Packing compared to modern day urethane U-Cup seals that often replace Vee Packing, they have nothing to do with quality. The driving force seems to be cost.

In actuality, a urethane U-Cup seal, which in itself is generally considered a good seal for typical fluid power applications, is also much less expensive than the multi-lip seal system of Vee Packing. It appears that the Vee Packing’s advantages over a U-Cup style urethane seal are being overshadowed by a demand to reduce cost. The truth is that the manufacturing process required to produce Duck and Rubber Vee Packing has not really changed significantly overVee_line_stack the years. The Duck and Rubber Vee simply requires a much more labor intensive process of compression molding compared to urethane products which can be injection molded and greatly reduces labor cost.

As Fluid Power OEMs design systems with the focus of increasing their competitiveness they most certainly focus on reducing cost. The cost of a set of Vee Packing that may contain at minimum 5 components, compared to that of a single-lip urethane U-Cup seal is certainly higher.


The Impact to Fluid Power Systems Containing Vee Packing

As a result, Vee Packing is no longer the dominant sealing system in the industry. Complicating the issue is that often the machined tooling used to manufacture Vee Packing by major manufacturers is nearing the end of its life and would require a capital investment in machined tooling for a product that is being phased out by new business. In many cases large manufacturers are simply discarding these types of seal molds due to lack of demand. The large manufacturers of this once heavily used packing are focused on the sealing systems of the future. Their business plans are focused on earning future business of OEMs; building the cylinders of tomorrow. These systems will use a more economical sealing system. The spare part business for small orders of seals is simply not what these large manufacturers are looking for.

The obsolescence of Vee Packing should be a concern for the millions of companies that still rely on hydraulic and pneumatic systems with Vee Packing. These systems perform work that produces profit. In the event those sealing systems experience failure, many will require access to quality Duck and Rubber Vee Packing that can ship the same-day or face a line-down situation. With the correct Vee Packing set and proper maintenance, these systems can produce profit for a plethora of organizations for decades and avoid the need to procure new equipment. Organizations that have equipment with Vee Packing should be especially mindful of their inventory of seals. The industry decline has caused lead times and pricing to escalate. This can leave the customer with a perfectly good piece of equipment in an uncomfortable predicament of not being able to procure Vee Packing from the OEM of their cylinder for weeks, if at all.


Allegheny York Co. Increase Vee Packing Tooling Production to its 45 Year Inventory

Allegheny York Co has watched the decline of Vee Packing and other Duck and Rubber products like piston cups over the years. Through our years as a manufacturer and distributor of hydraulic and pneumatic seals, we have carved our niche in fluid power sealing solutions. While we represent some of the largest seal manufacturers in the world, our focus is meeting the needs of industrial customers who have emergency line-down situations and require a quality seal to fill their groove appropriately. Our business has grown considerably with this business model. Our 9 Pan Stone Compression Molding Machines are state-of-the-art compression molding equipment. Each day, our engineering department works with our machinists to produce new tooling for standard and metric size Vee Packing and other seals that OEMs are generally unable to supply quickly or affordably. Our ability to produce custom tooling quickly and affordably is much of the reason our customers rely on Allegheny York Co rather than the cylinder OEM.

Allegheny York Co is located in Manchester, PA, just 20 minutes south of Harrisburg, PA. We manufacture and stock more than 450 sizes of Duck and Rubber Vee Packing. We have one of the largest inventories in the world, including Teflon, Viton & Nitrile materials that make up over 2,800 different Vee Packing molds. Our standard Vee Packing sizes range from ½” to 22” and we carry over 70 metric sizes from 20mm x 30mm to 400mm x 440mm. For diameters in the 40”+ range, we offer a spiral Vee Packing in-stock and ready to ship. For those emergency situations we likely have what our customers need in stock. If we do not, our engineers have the capability to draft designs for molds and construct the tooling to produce Vee Packing specific to our customers’ needs within 3-5 days.

See for yourself how extensive our Vee Packing inventory really is! Visit our online catalog or request one today. Contact our friendly and knowledgeable staff if you have questions or need a set with specifications not shown. Visit AlleghenyYork.com to sign up for an internet account which will allow you to have immediate access to availability and pricing.


Chip_thumbBy Chip Konrad.

CEO – Allegheny York Co.

Cummings, E. (1968). History of Rod Packing referenced from CPI Packings .Mechanical Packing Design and Theory of Operation. – http://www.c-p-i.com/media/cms_page_media/11/cpi%20mech%20pck%20bklt%20US-updte6%2011-.pdf

What would YOU like to see on the cover of the next AY catalog?

What would YOU like to see on the next catalog cover?


Cast your vote and you could see your suggestions on the next issue!