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Hydraulic seals for hydraulic repair, seal distributors,oem,industrial maintenence

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Rod Seals / Buffer Rings are often the decisive factor in ensuring that a hydraulic cylinder operates at peak performance.

AS2 - 2 PC STEPPED BTFE/NBR ROD BUFFER SEAL - INCH

Stepped seals are used to “buffer” pressure spikes from the primary rod seal, and are sometimes used in tandem. Combined with an unloaded u-cup, pressure builds between the step seal and primary seal and helps “load” the u-cup. Seals are machined from bronze filled Teflon®. Expanders are 70 durometer high memory nitrile, and are also available in Viton. Part numbers that contain a P63D suffix are made from 63D shore urethane. Temperature: -40°F to 225°F Pressure: 0 to 3500 psi

AS2 - 2 PC STEPPED BTFE/NBR ROD BUFFER SEAL - METRIC

Stepped seals are used to buffer pressure spikes from the primary rod seal, and are sometimes used in tandem. Combined with an unloaded u-cup, pressure builds between the step seal and primary seal and helps load the u-cup. Seals are machined from bronze filled Teflon®. Expanders are 70 durometer high memory nitrile, and are also available in Viton. Part numbers that contain a P63D suffix are made from 63D shore urethane. Temperature: -40°F to 225°F Pressure: 0 to 3500 psi

AS7 - 2 PC DOUBLE ACTING BTFE/NBR ROD SEAL

Our AS7 series rod seals are machined from bronze filled TFE for the most severe applications. Standard expander rings on this series rod seal are round cross section high memory 70 durometer nitrile; however, Viton expanders are available. Consult sales for pricing and delivery of special compounds. Temperature: -40° to 225°F Pressure: 0 to 5,000 PSI

BU - 2PC URETHANE/POM ROD BUFFER SEAL W/BACKUP - METRIC

The BU is a compact, snap-in urethane rod buffer seal with a POM ID back-up ring. This seal is often found in heavy construction machinery cylinders. It was developed for high pressure loads and where extreme pressure spikes are common. Material: PU and POM. Temp: -30°F to +230°F Pressure: PSI 7200

CAT® 2 PC REPL STEPPED BTFE/NBR ROD BUFFER SEAL - INCH

CAT® - Type Stepped TFE Buffer Rings

CAT®/CASE® 1 PC REPLACEMENT URETHANE BUFFER RING - INCH

These urethane buffer rings are rectangular shaped in profile. They are most commonly used in combination with a u-cup as a rod seal. Their purpose is to protect the rod seal from contaminants as well as to apply a hydraulic “load” to the u-cup. Some of these urethane rings are used as a backup ring combined with a rubber sealing ring in suspension cylinder applications. Part numbers starting with a G are used in Case® equipment; the others are typically used in Caterpillar® equipment. Temperature: -40°F to 225°F Pressure: 0 to 5000 psi

CBR/CTB - CAT®/CASE® U-CUP BUFFER RING - INCH

U-cup type buffer rings are made in sizes to retrofit many Case® grooves, and are easy to install. They are designed for systems running high pressures or susceptible to pressure spikes. The sealing element is made from 90 durometer urethane and the anti-extrusion ring is made from POM. Metric sizes retrofit the stepped buffer ring grooves. Inch sizes below 2.25” do not have backup rings. Temperature: -22°F to 230°F Pressure: 0 to 5800 psi

MBR - URETHANE U-CUP STYLE BUFFER RING - METRIC

U-cup type buffer rings are made in sizes to retrofit many Caterpillar® and Case® grooves, and are easy to install. They are designed for systems running high pressures or susceptible to pressure spikes. The sealing element is made from 90 durometer urethane and the anti-extrusion ring is made from POM. Metric sizes retrofit the stepped buffer ring grooves. Temperature: -22°F to 230°F Pressure: 0 to 5800 psi

MBRU - 1 PC RECTANGULAR URETHANE BUFFER RING - METRIC

These urethane buffer rings are rectangular shaped in profile. They are most commonly used in combination with a u-cup as a rod seal. Their purpose is to protect the rod seal from contaminants as well as to apply a hydraulic “load” to the u-cup. Some of these urethane rings are used as a backup ring combined with a rubber sealing ring in suspension cylinder applications. Part numbers starting with a G are used in Case® equipment; the others are typically used in Caterpillar® equipment. Temperature: -40°F to 225°F Pressure: 0 to 5000 psi

MD - NITRILE ROD SQUEEZE SEAL w/POM BACKUP - METRIC

Style MD rod seals utilize a fabric reinforced rubber base combined with a POM backup for extrusion resistance, and a homogeneous nitrile sealing lip, enabling this seal to handle higher pressures than most other all-rubber seals. The “squeeze” design provides for good low pressure sealability. Temperature: -22°F to +248°F Pressure: 0 to 6000 psi

S8 - 2 PC BONDED ROD SQUEEZE SEAL - METRIC

Style MD rod seals utilize a fabric reinforced rubber base combined with a POM backup for extrusion resistance, and a homogeneous nitrile sealing lip, enabling this seal to handle higher pressures than most other all-rubber seals. The “squeeze” design provides for good low pressure sealability. Temperature: -22°F to +248°F Pressure: 0 to 6000 psi

SM - NITRILE/POM/NYLON 3 PC RIBBED ROD SEAL - METRIC

Our ribbed 3 piece rod seal is used as an alternative to veepacking in a rod application. This 3 piece seal offers excellent low pressure sealing due to its multi-lip NBR design. The header is made from POM and incorporates a nylon anti-extrusion ring which enables this seal to withstand up to 10,000 PSI. Temperature: -22°F to 248°F Pressure: 0 to 10,000 psi

TDI - HUNGER® 2PC URETHANE/PTFE ROD SEAL - METRIC

The TDI rod seal, manufactured by Hunger® has a urethane sealing lip with a BTFE insert secondary sealing lip. Under increasing pressure, the outer seal compresses the BTFE insert slide ring onto the rod. This unique seal creates a high force sealing edge with low-frictional resistance.

TR0 - 3PC NITRILE ROD T-SEAL w/NYLON BACKUPS- INCH

Rod T-seals were originally developed to replace O-rings, and retrofit into standard commercial O-ring grooves. This development ended two serious reliability problems: 1. Extrusion through the clearance gap. 2. Spiral or twisting failure due to instability in the groove. T-seal back-ups are hydraulically or pneumatically driven against the dynamic surface when system pressure forces the elastomer into the space beneath the back-up. This immediate response to pressure makes them very effective wipers, keeping contaminants away from the sealing line. Standard material for our T-seals is 75 durometer nitrile with moly-filled nylon back-up rings. Other materials are available upon request. Temperature: -40°F to +225°F. Pressure: 0 to 5,000 PSI


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


Hydraulic seals for hydraulic repair, seal distributors,oem,industrial maintenence

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