Grease Seals | McMaster-Carr

	REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration, Evaluation, Authorization and Restriction of Chemicals)

REACH Compliant

	For Minimum Bore Width For Minimum Bore Width

1,025 Products

Rotary Shaft Seals

Spring-Loaded Rotary Shaft Seals with Wiper Lip

These seals have a metal case that creates a tight seal when mating with smooth surfaces.

Bore-Sealing Spring-Loaded
Rotary Shaft Seals with Wiper Lip

Ribbed Buna-N over steel creates a tight seal with the bore, even when mating with a rough surface or in a split housing.

Spring-Loaded Rotary Shaft Seals

Also known as oil seals, use these to retain oil on rotating shafts in motors, pumps, bearings, and gearboxes. A spring secures the lip against the shaft, preventing messy leaks. Press-fit seals into the bore around the shaft.

Spring-Loaded Rotary Shaft Seals for Misaligned Shafts

Designed with an extended lip, these seals have the flexibility to accommodate shaft misalignment up to 0.125". They're also known as clipper seals.

Rotary Shaft Seals for Grease

Also known as grease seals, these are designed to retain thick lubricant at low pressure. They have a light grip on the shaft that creates less friction than spring-loaded seals.

High-Speed Rotary Shaft Seals

A slippery PTFE surface allows these seals to function at speeds at least 25% faster than other rotary shaft seals.

Split Rotary Shaft Seals

Swap out old seals without disassembling components—these seals come split for easy installation. They're also known as clipper seals.

Shaft-Mounted Rotary Seals

Made from Buna-N for excellent resistance to oil and grease.

Heavy Duty Shaft-Mounted Rotary Seals

These seals are fluoroelastomer, so they have excellent chemical resistance and withstand temperatures up to 390° F.

Mechanical Pump Shaft Seals with Extended Spring

An extended spring on these seals accommodates variations in seal cavity length and pump misalignment.

Narrow-Profile Mechanical Pump
Shaft Seals with Extended Spring

With a smaller seal OD than standards seals, these seals have an extended spring that accommodates variations in seal cavity length.

Heavy Duty Mechanical Pump Shaft Seals

Multiple internal springs ensure these seals keep the sealing surfaces in contact in demanding applications, such as agricultural, chemical, and mining pumps.

Mechanical Pump Shaft Seals

These seals are commonly used in well, sump, and displacement pumps.

Mechanical Pump Shaft Seals with Compact Spring

Built for small circulation and dispensing pumps, these seals have short springs.

Shaft Repair Sleeves

Also known as speedi sleeves, use these to repair and protect worn shafts for a smooth sealing surface without machining.

Mechanical Shaft Seals

Commonly used in mixing and grinding equipment, conveyors, and construction machinery, these two-part seals withstand exposure to abrasive material.

Rod and Piston Seals

Buna-N U-Cup Seals

These U-cup seals create less friction than O-ring-loaded U-cups, so they wear more slowly. Also known as lip seals, U-cups have a sealing lip on both the inside and outside edges, so they can be used for rod and piston sealing.

High-Pressure Leather U-Cup Seals

Rated for pressure up to 10,000 psi, these leather U-cups handle over 80 times more pressure than our Buna-N U-cups.

O-Ring-Loaded U-Cup Seals

Also known as loaded-lip seals and PolyPaks, an O-ring secures these U-cups to the rod or piston for better sealing performance at lower pressures than unsupported U-cup seals.

High-Stability O-Ring-Loaded U-Cup Seals

Also known as Type B seals, these U-cups are wider than our other O-ring-loaded U-cup seals for better stability and fit in wider grooves.

Spring-Loaded Seals

In addition to providing excellent sealing performance at low pressure, these seals withstand a wider range of temperatures and chemicals than U-cup seals. They’re also known as spring-energized seals.

Rod Seals

These seals have a beveled lip that optimizes contact against the rod, while a secondary lip keeps the seal stable.

High-Speed Rod Seals

The slippery PTFE surface of these seals allows rod motion up to seven times faster than our other rod seals.

Rod Seals for O-Ring Grooves

Avoid common O-ring failure in dynamic applications—the square base of these seals prevents twisting, while backup rings protect against extrusion.

Air-Powered Cylinder Cushioning Seals

For use in air-powered cylinders, these seals prevent the piston from slamming against the cylinder body to minimize wear and noise.

High-Pressure Hydraulic Cylinder Buffering Seals

Rated for pressure up to 10,000 psi, these seals withstand the highest pressure of our buffering seals.

High-Speed Hydraulic Cylinder Buffering Seals

PTFE gives these seals a slippery surface that facilitates rod speeds over seven times faster than our other buffering seals. They're rated for pressure up to 5,000 psi.

Rod Wipers

Rod-Sealing Wipers

A two-lip design means that these wipers also function as a rod seal.

Rod Wipers

These rod wipers are also known as U-type wipers.

High-Speed Rod Wipers

Made from MDS-filled PTFE for a slippery surface, these wipers allow rods to move three times faster than other rod wipers.

Cylinder-Sealing Rod Wipers

These wipers seal against the cylinder housing to prevent contaminants from entering between the outside edge and the housing.

Rod Wipers for Open Grooves

Replace wipers in open-groove cylinders—these wipers have an integral steel case so they press fit into the groove around the rod.

Seal Kits for Hydraulic Cylinders

Rod Seal Kits

Replace all the seals on the rod end of a hydraulic cylinder.

Rod Glands with Seals

These kits include the rod gland with all of the seals installed.

Piston Seal Kits

Replace all the seals on the piston of a hydraulic cylinder.

Rotary Shaft Seals

Spring-Loaded Rotary Shaft Seals with Wiper Lip

Bore-Sealing Spring-LoadedRotary Shaft Seals with Wiper Lip

Spring-Loaded Rotary Shaft Seals

Spring-Loaded Rotary Shaft Seals for Misaligned Shafts

Rotary Shaft Seals for Grease

High-Speed Rotary Shaft Seals

Split Rotary Shaft Seals

Shaft-Mounted Rotary Seals

Heavy Duty Shaft-Mounted Rotary Seals

Mechanical Pump Shaft Seals with Extended Spring

Narrow-Profile Mechanical PumpShaft Seals with Extended Spring

Heavy Duty Mechanical Pump Shaft Seals

Mechanical Pump Shaft Seals

Mechanical Pump Shaft Seals with Compact Spring

Shaft Repair Sleeves

Mechanical Shaft Seals

Rod and Piston Seals

Buna-N U-Cup Seals

High-Pressure Leather U-Cup Seals

O-Ring-Loaded U-Cup Seals

High-Stability O-Ring-Loaded U-Cup Seals

Spring-Loaded Seals

Rod Seals

High-Speed Rod Seals

Rod Seals for O-Ring Grooves

Air-Powered Cylinder Cushioning Seals

High-Pressure Hydraulic Cylinder Buffering Seals

High-Speed Hydraulic Cylinder Buffering Seals

Rod Wipers

Rod-Sealing Wipers

Rod Wipers

High-Speed Rod Wipers

Cylinder-Sealing Rod Wipers

Rod Wipers for Open Grooves

Seal Kits for Hydraulic Cylinders

Rod Seal Kits

Rod Glands with Seals

Piston Seal Kits

Bore-Sealing Spring-Loaded
Rotary Shaft Seals with Wiper Lip

Narrow-Profile Mechanical Pump
Shaft Seals with Extended Spring