Spring Seals | McMaster-Carr

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.

Rotary Shaft Seals

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.

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 with Wiper Lip

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

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.

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.

Mechanical Pump Shaft Seals

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

These seals fit in housing bores that meet DIN 24960.

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.

High-Speed Mechanical Pump Shaft Seals

Built for high-speed circulation and dispensing pumps, these seals have a short spring that facilitates speeds up to 10,000 rpm.

Mechanical Pump Shaft Seals

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

Garter Springs

With ends that are connected to form a circle, these garter springs exert strong radial (towards the center) forces from all directions to maintain pressure on shafts or in seals.

Spring-Loaded Seals

Spring-Loaded Seals

Rotary Shaft Seals

Spring-Loaded Rotary Shaft Seals

Bore-Sealing Spring-LoadedRotary Shaft Seals with Wiper Lip

Spring-Loaded Rotary Shaft Seals with Wiper Lip

Spring-Loaded Rotary Shaft Seals for Misaligned Shafts

Rotary Shaft Seals for Grease

Split Rotary Shaft Seals

Mechanical Pump Shaft Seals

Mechanical Pump Shaft Seals with Extended Spring

Narrow-Profile Mechanical PumpShaft Seals with Extended Spring

Heavy Duty Mechanical Pump Shaft Seals

High-Speed Mechanical Pump Shaft Seals

Mechanical Pump Shaft Seals

Garter Springs

Garter Springs

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

Narrow-Profile Mechanical Pump
Shaft Seals with Extended Spring