U Cups

The u cup is ideal for use on linear moving shafts and piston heads, because unlike an O-ring the shape does not try to roll with the movement and create friction.

6226 - NITRILE SYMMETRICAL (AN) U-CUP - INCH

6226 series u-cups are manufactured to the AN design. Standard material is 80 durometer nitrile. They may be used at pressures up to 1000 psi with the proper clearances without back-up rings. Temperature: -40°F to 250°F Pressure: 0 to 1000 psi

8400 - NITRILE SYMMETRICAL U-CUP - INCH

8400 series u-cups for pneumatic and hydraulic cylinders are especially suited for low speed, low pressure situations. They provide an extremely smooth steady movement, with less breakaway force required because of their inherent low friction. Standard material for 8400 series u-cups is 80 durometer NBR, with a temperature range of -40°F to 250°F. However, other materials such as FKM, nitroxiles, and ethylene propylene are available. 8400 series u-cups may be used at pressures up to 800 psi with proper clearances, without back-up rings; and up to 2500 psi with back-up rings. Temperature: -40°F to 250°F Pressure: 0 to 800 psi, with back-ups 2500 psi (see above)

BD - DOUBLE LIP O-RING LOADED ROD SEAL w/BACKUP - INCH

Here is the state of the art in heavy duty sealing. Manufactured from high quality urethane, this seal is similar to the BS profile seal. The seal has an integral backup ring for added extrusion resistance and loaded lip for optimal low pressure sealing. A film of oil is trapped between the two lips for low running friction. Temperature: -50°F to 230°F Pressure: 0 to 10,000 psi

BD - DOUBLE LIP O-RING LOADED ROD SEAL w/BACKUP -METRIC

Here is the state of the art in heavy duty sealing. Manufactured from high quality urethane, this seal is similar to the BS profile seal. The seal has an integral backup ring for added extrusion resistance and loaded lip for optimal low pressure sealing. A film of oil is trapped between the two lips for low running friction. Temperature: -50°F to 230°F Pressure: 0 to 10,000 psi

BP - DOUBLE LIP ORING LOADED URETHANE PISTON SEAL -INCH

The BP type polyurethane twin lip piston seal is an excellent choice for all single acting piston applications. Loaded with a specially designed nitrile expander, this seal offers improved sealing with lower friction. This seal is sometimes used in conjunction with a nylon retainer in many Mailhot® telescopic cylinders. Temperature: -50°F to 230°F Pressure: PSI 0 to 6000

BS - DOUBLE LIP URETHANE ROD SEAL - INCH

The BS series hydraulic rod seal is ideally suited for heavy-duty mobile and stationary service where leakage must be held to an absolute minimum. This unique geometry is highly resistant to side loading and insensitive to pressure spikes. The BS profile reduces or eliminates leakage under severe operating conditions. It also reduces wear and dry run. Rod lubricant is retained in the cavity formed by the secondary lip providing exceptionally low running friction even at low velocities. Sealing performance is outstanding ... even at 0 PSI. Temperature: -50°F to 230°F Pressure: 0 to 6000 psi

BS - DOUBLE LIP URETHANE ROD SEAL - METRIC

The BS series hydraulic rod seal is ideally suited for heavy-duty mobile and stationary service where leakage must be held to an absolute minimum. This unique geometry is highly resistant to side loading and insensitive to pressure spikes. The BS profile reduces or eliminates leakage under severe operating conditions. It also reduces wear and dry run. Rod lubricant is retained in the cavity formed by the secondary lip providing exceptionally low running friction even at low velocities. Sealing performance is outstanding ... even at 0 PSI. Temperature: -50°F to 230°F Pressure: 0 to 6000 psi

BS-B - URETHANE DOUBLE LIP ROD SEAL w/POM BACKUP - INCH

The BS-B two piece single acting rod seal consists of 94 shore A polyurethane with a POM ID backup. The twin lip design offers superior sealing while the active back up ring provides an improved sealing gap. Temperature: -22°F to 212° Pressure: PSI 0-5800

BS-B - URETHANE DOUBLE LIP ROD SEAL w/POM BACKUP - METRIC

The BS-B two piece single acting rod seal consists of 94 shore A polyurethane with a POM ID backup. The twin lip design offers superior sealing while the active back up ring provides an improved sealing gap. Temperature: -22°F to 212° Pressure: PSI 0-5808

BSLL - DOUBLE LIP ORING LOADED URETHANE ROD SEAL - INCH

The BSLL type polyurethane loaded rod seal has twin lips that offer dry rod, low friction sealing. This seal is easily installed and the nitrile expander ensures complete actuation under all pressure conditions. Styles may have a specially designed expander or an O-ring. Temperature: -50° to 230° Pressure: PSI 0 to 6000

BT - 4300® HIGH TEMP DOUBLE LIP ROD U-CUP - INCH

The BT series rod seal is a premium hydraulic 90A polyurethane seal. Using Parker's proprietary 4300® compound this profile provides shock load resistance and increased sealing performance, even at zero pressure and with one of the highest temperature ranges available in a polyurethane seal. A knife trimmed beveled sealing lip does an excellent job wiping excess fluids from the rod while a secondary sealing lip, located at the base, ensures a stable fit in the gland while providing an enhanced seal. Temperature: -65°F to 275°F Pressure : 0 to 5000 PSI

C1 - NITRILE ASYMMETRICAL ROD U-CUP - METRIC

Profile C1 rod seals are a good choice for hydraulic and pneumatic equipment that require seals with the smallest possible housings. Although cross sections and heights are very small, the sealing performance is excellent. Extremely low friction is experienced because of the short contact area at the sealing surface. Installation: These rod seals are manufactured oversized on the external diameters in relation to the nominal dimensions. This ensures the required tight fit, and eliminates heel drag on the dynamic surface. Only after installation will the sealing lip diameter show the desired dimensions. Profile C1 rod seals may easily be snapped into the groove. Standard material is 84 durometer nitrile, and may be used at a temperature range of -65°F to 220°F in hydraulic applications and -65°F to 180°F in pneumatic applications. Maximum working pressure for hydraulic use is 2350 psi and for pneumatic use is 235 psi. Temperature: -65°F to 220°F (see above) Pressure: 0 to 2350 psi (see above)

C2 - NITRILE ASYMMETRICAL PISTON U-CUP - METRIC

C2 style piston seals have excellent sealing performance despite the small profile. Extremely low friction is experienced because of the short contact area at the sealing surface. These piston seals are manufactured undersized on the internal diameters in relation to the nominal dimensions. This ensures the required tight fit and eliminates heel drag on the dynamic surface. Only after installation will the sealing lip diameter show the desired dimensions. Profile C2 piston seals stretch easily into the groove of one piece pistons. Standard material is 84 durometer nitrile, and may be used at a temperature range of -65°F to 220°F in hydraulic applications and -65°F to 180°F in pneumatic applications. Maximum working pressure for hydraulic use is 2350 psi and for pneumatic use is 235 psi. Temperature: -65°F to 220°F(see above) Pressure: 0 to 2350 psi (see above)

DZ - DEEP Z ROD SEAL - INCH

The DZ Seal is mainly used for rod seal applications. It's unique multi-lip design incorporates the sealability & low-compression set of 70A nitrile with the benefits of the anti-extrusion and wear resistant properties of 90A urethane. These seals work extremely well in low temperature applications. Parts ending with an F have a Flouratrel? heel, the parts ending with an R have a nylon angled ID backup.

MA20 - NITRILE U-CUP w/STEPPED NYLON HEEL - METRIC

These seals are to be used in applications where the piston is stepped on the outer diameter to accommodate the flange in the hard nylon heel of the two piece seal. The nylon cap serves as a bearing and anti-extrusion device. The seal material is a high durometer nitrile rubber. Temperature: -22°F to 212°F Pressure: 0 to 3045 psi

MA21 - NITRILE SYMMETRICAL PISTON or ROD U-CUP - METRIC

This symmetrical 90A nitrile single acting rod or piston seal is an economical sealing solution for standard cylinder applications. Easily assembled into closed grooves, the MA21 offers a superior static and dynamic sealing effect. Temperature : -20°F to +220°F Pressure : 0 to 2175 PSI

MA22 - NITRILE SYMMETRICAL PISTON or ROD U-CUP - METRIC

This symmetrical 90A nitrile single acting rod or piston seal is an economical sealing solution for standard cylinder applications. Although originally designed for hydraulic applications, it is also used in special pneumatic cylinders as well. Easily assembled into closed grooves, the MA22 offers a superior static and dynamic sealing effect. Temperature : -20°F to 220°F Pressure: 0 to 2175 PSI

MA23 - NITRILE ASYMMETRICAL PISTON U-CUP - METRIC

The MA23 non-symmetrical 90A nitrile single acting piston U-cup is an economical sealing solution for standard cylinder applications. Easily assembled into closed grooves, this seal offers a superior static and dynamic sealing effect. Temperature : -20°F to +220°F Pressure : 0 to 2175 PSI

MA24 - NITRILE ASYMMETRICAL ROD U-CUP - METRIC

This non-symmetrical 90A nitrile single acting rod seal is an economical sealing solution for standard cylinder applications. Easily assembled into closed grooves, the MA24 offers a superior static and dynamic sealing effect. Temperature : -20°F to +220°F Pressure : 0 to 2175 PSI

MA25 - URETHANE SYMMETRICAL ROD/PISTON U-CUP - METRIC

MA25 series metric urethane u-cups are symmetrical in design and may be used as rod or piston seals. Back-beveled knife-trimmed lips ensure a good seal with minimal friction. Temperature: -50°F to 230°F Pressure: 0 to 5800 psi

MA28 - URETHANE ASYMMETRICAL PISTON U-CUP-METRIC

MA28 series metric urethane u-cups are non-symmetrical in design and are meant to be used only for reciprocating piston seals. They are manufactured slightly smaller in diameter than nominal dimensions. This ensures a tight fit when snapped over the piston. Good stability and decreased heel drag, resulting in lower friction, are the prime features of this seal. Temperature: -40°F to 230°F Pressure: 0 to 5000 psi

MA30 - URETHANE ASYMMETRICAL ROD SEAL - METRIC

MA30 series metric urethane u-cups are non-symmetrical in design and are meant only to be used for reciprocating hydraulic rod applications. They are manufactured slightly larger in diameter than nominal dimensions. This ensures a tight fit when snapped into the groove. Good stability and decreased heel drag resulting in lower friction are the prime features of this seal. Temperature: -40°F to 230°F Pressure: 0 to 5800 psi

MA30B-URETHANE ROD SEAL w/NYLON BACKUP - METRIC

This sealing set is designed to resist extrusion even with an excessive clearance gap. The seal is made from 90+ Shore A hardness urethane and the backup ring is machined from Nylon. Temperature: -40°F to 230°F Pressure: 0 to 7000 psi

MA35 - URETHANE SYMMETRICAL DOUBLE LIP ROD SEAL -METRIC

This single acting rod seal is commonly used in telescoping cylinders. Made from 94 durometer polyurethane, it has symmetrical lips and an additional sealing lip. This extra lip provides extra stability while improving the sealing effect. It is easily assembled into closed grooves and offers good performance even at low pressures. Temperature: -20°F to 212°F Pressure: 0 to 5500 psi

MLLB -  BEVELED O-RING LOADED LIP SEAL - METRIC

Type B Beveled Lip Loaded U-Cups are squeeze seals with symmetrical profiles for rod applications. The rectangular shape of its cross section ensures stability in the gland. The urethane shell provides high wear resistance and the O-ring energizer functions as a spring to maintain sealing contact under low pressure or vacuum application. The beveled lip design is excellent for cutting fluid film. An economical choice as a stand-alone seal or can be used in tandem with a buffer seal.

Temperature: -65°F to 200°F Pressure: 0 to 5000 PSI

MUPH - NITRILE ASYMMETRICAL PISTON U-CUP - METRIC

These easy to install piston u-seals are perfect for low pressure hydraulic and pneumatic applications. These seals have lower breakaway friction than most urethane u-cups. Also available in Viton. Temperature: -22°F to 212°F Pressure: 0 to 1160 psi

MURH - NITRILE ASYMMETRICAL ROD U-CUP - METRIC

These high quality rod u-seals are molded from 90 durometer NBR and insure that your systems will seal under zero pressure situations. These seals can be used in either low pressure hydraulic or pneumatic applications. For sizes not listed, or availability in Viton, please call customer service. Temperature: -22°F to 212°F Pressure: 0 to 1160 psi

OUY - NITRILE PISTON U-CUP w/POM BACKUP - METRIC

These high durometer NBR u-cup piston seals have an anti-extrusion ring on the outer edge made from POM and are commonly found in many track adjuster cylinders. Material: NBR/POM, Temp -20 - 220°, PSI: 0 - 4000

POLYPAK®/ DEEP O-RING LOADED LIP SEAL - INCH

Standard type Loaded Lip Seals, also known as standard PolyPaks®, can be used as rod or piston seals and are basically square in configuration. They are manufactured from high quality 90 durometer polyurethane. They are also available in other materials; consult sales office for price and availability. Temperature; -65°F to 200°F Pressure: 0 to 5000 psi

POLYPAK®/BEVELED O-RING LOADED LIP SEAL - INCH

Type B Loaded Lip Seals, also known as Type B PolyPaks®, are recommended only for rod seal applications. The high lip interference combined with a beveled lip provide the driest rod sealing of these configurations. The rectangular configuration gives good down stream stability making this seal the standard of the industry. They are manufactured from high quality 90 durometer polyurethane. They are also available in other materials; consult sales office for price and availability. Temperature: -65°F to 200°F Pressure: 0 to 5000 psi

POLYPAK®/STANDARD O-RING LOADED LIP SEAL - INCH

Standard type loaded lip seals, also known as standard PolyPaks®, can be used as rod or piston seals and are basically square in configuration.

PR - PIP RING (PRESSURE INVERTING PEDESTAL RING) - INCH

Pip (pressure inverting pedestal) rings convert type “B” loaded lip seals into bi-directional seals. Pip rings are made from a harder durometer urethane material and may be split for easier installation. Temperature: -60° F to 200° F Pressure: 0 to 5000 psi

RSE- URE PISTON U-CUP w/STEPPED BACKUP/BEARING- Metric

These urethane piston u-cups utilize an L-shaped anti-extrusion ring / bearing designed into the outside of the heel. These seals offer high elasticity and low deformation and abrasion resistance, along with superior anti-extrusion capabilities. These are commonly used with our "AR" plastic retainer rings, which hold the seal in it’sgroove. Temperature: -22°F to 230°F Pressure: 0 to 5800 psi

UCF - FABRIC REINFORCED NITRILE U-CUP - INCH

Cotton-Duck reinforced nitrile u-cups wear extremely well in heavy duty hydraulic cylinder applications. The wicking action of the cotton-duck material keeps the seal lubricated. The lip seal design also contributes to low friction. Temperature: -20°F to 200°F Pressure: 0 to 3500 psi

UCH - NITRILE NON-STANDARD HOMOGENEOUS U-CUP - INCH

Homogeneous Nitrile U-Cups are made from 80 durometer nitrile and may come in one of several profiles. All may be used for rod or piston seals in pneumatic or low pressure hydraulic applications. Temperature: -25°F to 225°F Pressure: 0 to 2200 psi

UCL - LEATHER U-CUP w/NITRILE FILLER - INCH

Despite the fact that leather u-cups with rubber fillers are somewhat outdated, we fulfill our commitment to our customers by carrying the hard to find items. Many applications still require the use of these seals since there are no reliable retrofits available. Among these applications are bucket trucks, drill rigs, forklifts and some cylinders built by Benton Harbor Engineering®. They are constructed of Thiokol treated leather with nitrile expander rings. Other sizes may be available by request. Temperature:-50°F to 275°F Pressure: 0 to 5000 psi

UNP - AN - THIN LIP URETHANE PISTON U-CUP - INCH

UNP-AN series urethane u-cups are non-symmetrical in design and are meant only to be used for reciprocating hydraulic piston applications. These seals are similar to our other UNP seals but have a thinner outside lip. Good stability and decreased heel drag, resulting in lower friction, are the prime features of this seal. Temperature : -65°F to +200°F Pressure : 0 to 2500 PSI

UNP - URETHANE ASYMMETRICAL PISTON U-CUP - INCH

UNP series urethane u-cups are non-symmetrical in design and are meant only to be used for reciprocating hydraulic piston applications. They are manufactured slightly smaller in diameter than nominal dimensions. This ensures a tight fit when installed in the groove. Good stability and decreased heel drag, resulting in lower friction, are the prime features of this seal. Temperature: -65°F to 200°F Pressure: 0 to 5000 psi

UNR - URETHANE ASYMMETRICAL ROD SEAL - INCH

UNR series urethane u-cups are non-symmetrical in design and are meant only to be used for reciprocating hydraulic rod applications. They are manufactured slightly larger in diameter than nominal dimensions. This ensures a tight fit when snapped into the groove. Good stability and decreased heel drag resulting in lower friction are the prime features of this seal. Temperature: -65°F to 200°F Pressure: 0 to 5000 psi

UNRR - POLYURETHANE RIBBED ROD SEAL - INCH

Style UNRR rod seals are made from 92 A durometer urethane and are commonly used in industrial cylinders. The serrated inside of these seals produce a dry rod with little friction. Temperature: -60°F to 200°F Pressure: 0 to 5000 psi

UNRR - POLYURETHANE RIBBED ROD SEAL-METRIC

Style UNRR rod seals are made from 92 A durometer urethane, and are commonly used in industrial cylinders. The serrated inside of these seals produce a dry rod with little friction. Temperature: -60°F to 200°F Pressure: 0 to 5000 psi

US- URETHANE SYMMETRICAL ROD or PISTON U-CUP - INCH

US series urethane u-cups are symmetrical in design and may be used as rod or piston seals. Back-beveled knife-trimmed lips ensure a good seal with minimal friction. Temperature: -65°F to 200°F Pressure: 0 to 5000 psi

W1-3PC NBR/POM/TFE HGH PRESSURE POWERWASHER SEAL-METRIC

This 2 piece sealing set was designed specifically for high pressure water pumps and pressure washer cleaning equipment. This new design replaces the higher friction chevron solution. This sealing set has a much longer service life due to less friction and a specially lubricated NBR and cotton material. It works well in water and water/oil mixture fluids. Part numbers with a “B” suffix contain a carbon-filled Teflon® backup ring. Temperature: -22°F to 175°F Pressure: PSI < 3600

W2 - 1PC NBR/FAB LOW PRESSURE POWERWASHER SEAL - METRIC

This 1 piece seal was also designed for low pressure water pumps and pressure washer cleaning equipment. This seal is used downstream of the W1 set, and seals the low pressure leakage return. This seal has a much longer service life due to less friction and a specially lubricated NBR and cotton material. It works well in water and water/oil mixture fluids. W3 part numbers contain a thermoplastic header ring. Temperature: -22°F to +175°F Pressure: PSI < 1100

W3 - 2 PC LOW PRESSURE POWERWASHER SEAL - METRIC

This 2 piece sealing set was also designed for low pressure water pumps and pressure washer cleaning equipment. This set is used downstream of the W1 set, and seals the low pressure leakage return. This sealing set has a much longer service life due to less friction and a specially lubricated NBR and cotton material. It works well in water and water/oil mixture fluids. This part contains a thermoplastic header ring. Temperature: -22°F to +175°F Pressure: PSI < 1100


Allegheny York Hydraulic Seals and Pneumatic Seals

Allegheny York offers all the necessary elements for virtually every hydraulic seal and hydraulic cylinder seal application. Big or small, we welcome National Suppliers, wholesalers, MRO, OEM, government, repair shops, and retailers. Our products include High quality Hydraulic Seals. These include Wipers, Rod Seals, Piston Seals, Wear Rings, O-Rings, Back-up Rings, U-Seals, Rod Seals, Piston Seals, Wear Rings, Buffer Seals, Vee Packing, Retainer Rings, Wiper Rings, Oil Seals, Cushion Seals, Custom Machined Seals, Pneumatic Seals, and Aftermarket Cylinder Seal Kits for the fluid power industry.

With a large online variety of high performance seals in thousands of sizes. Whether it is small or large diameter, low or high pressure, reciprocating or rotary motion, dynamic or static sealing, a suitable product for your application is available.

We deliver seal solutions to meet the needs of every customer in a vast array of industries including: heavy industrial, mining, manufacturing, high-tech, medical, military, precious metals, natural resource extraction, processing equipment, and many more. With our material knowledge, technological capabilities, and applications experience, Allegheny York is able to offer customers both tailor-made solutions and complete sealing systems of the highest quality.

Our team knows seals—we guarantee a reliable, informed contact every time you call. We give you the advantage with competitive pricing and quick order turnaround for Any Conceivable Application.

Allegheny York specializes in custom engineered sealing solutions for numerous industries. Our innovative machine technology and experienced engineering team enable us to produce an unlimited number of seal profiles in sizes up to 38 inches in diameter.

With turnaround time as short as same day, our custom machined products meet the highest quality standards. Production systems are fast and efficient, keeping manufacturing and lead times to a minimum. Request a quote for custom machined seals.

Our advanced machining centers allow you to choose from 170 standard profiles or unlimited custom designs. We manufacture seals up to 38 inches. Custom designs and unique sizes are available in a variety of materials.

Allegheny York stocks a substantial selection of hydraulic and pneumatic seals.These seals prevent fluid leakage in hydraulic systems. We purchase quality inventory and meet stringent industry standards to provide the best available products. With one of most extensive inventories in the country, we are confident we can provide the seals you need. Standard and metric sizes are available in a variety of materials, ranging from urethanes and elastomers to engineered plastics.

We consistently source new and improved product lines, increasing our inventory to satisfy demand. We enjoy the challenge of providing solutions to the most difficult seal applications.

Allegheny York offers a wide range of aftermarket seal kits. Our knowledgeable technicians will assemble complete kits based on a manufacturer serial or model numbers. If these identifying numbers are not available, we can reverse engineer a kit product to provide the parts you need.

Since we maintain a large inventory of major industrial and heavy equipment manufacturers, turnaround time for kit orders is as short as one day. All kits meet or exceed OEM specifications.

Allegheny York’s Industrial Seals Catalog makes ordering parts easy. The catalog features tens of thousands of parts with a seal profile index that will help you easily identify the seals you need. Profile sections include all the necessary material and engineering information as well as easily identifiable sizing. Our catalog is your easy to use resource for part ordering.

Cage Code: 3F317


x
Due to continuing disruptions in the supply chain UPS and FEDEX shipping may experience delays. More info. Close
Hydraulic seals for hydraulic repair, seal distributors,oem,industrial maintenence

Featured Products

Hose fittings and supplies
Hydraulic seals for hydraulic repair, seal distributors,oem,industrial maintenence

2024 CATALOG

AVAILABLE NOW!

E-Mail

Sales@AlleghenyYork.com

Customer Service

M-F 7:30am-5:30pm EST
717.266.6617

Onsite Sales

M-F 8:30am-5:00pm EST
3995 N George St Ext
Manchester, PA 17345
Hydraulic seals for hydraulic repair, seal distributors,oem,industrial maintenence

The Allegheny York APP

Get it on Google Play
Hydraulic seals for hydraulic repair, seal distributors,oem,industrial maintenence

Same Day Shipping

On most in-stock orders placed before 5pm EST.
Hydraulic seals for hydraulic repair, seal distributors,oem,industrial maintenence

Our Customers

Hydraulic Repair Shops
Seal Distributors
OEMs
Medical/Pharma
Aerospace
Agriculture
Food Processing
Coal/Oil/Gas Industries
Government/Military Contracts
Industrial Maintenance Departments