Labyrinth Seals | McMaster-Carr

	System of Measurement System of Measurement

Inch

Metric

	For Shaft Diameter For Shaft Diameter

	Seal OD Seal OD

	Seal ID Seal ID

	Seal Width Seal Width

	For Motion Type For Motion Type


Rotary	Oscillating

	For Use With For Use With

	Maximum Speed Maximum Speed

20,000 rpm or greater

	For Bore Diameter For Bore Diameter

	Maximum Pressure Maximum Pressure

	Maximum Temperature Maximum Temperature

	Loader Type Loader Type

Spring

O-Ring

Diamond-Profile O-Ring

	Material Material

Rubber

Plastic

Iron

	Spring Material Spring Material

Steel

Stainless Steel

	Minimum Temperature Minimum Temperature

	Color Color

	Black
	Gray

	For Minimum Bore Width For Minimum Bore Width

	DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense Acquisition Regulations Supplement)

DFARS Specialty Metals
COTS-Exempt

	RoHS (Restriction of Hazardous Substances) RoHS (Restriction of Hazardous Substances)

RoHS Compliant

	Case Material Case Material

Steel

Stainless Steel

Aramid Fiber

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

REACH Compliant

	Seat OD Seat OD

	Hardness Hardness

401 Products

Rotary Shaft Seals

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

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.

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

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

Mechanical Pump Shaft Seals

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

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 with Compact Spring

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

Mechanical Shaft Seals

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

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

Spring-Loaded Rotary Shaft Seals for Misaligned Shafts

Rotary Shaft Seals for Grease

High-Speed Rotary Shaft Seals

Split Rotary Shaft Seals

Mechanical Pump Shaft Seals

Mechanical Pump Shaft Seals with Extended Spring

Narrow-Profile Mechanical PumpShaft Seals with Extended Spring

Mechanical Pump Shaft Seals

Heavy Duty Mechanical Pump Shaft Seals

Mechanical Pump Shaft Seals with Compact Spring

Mechanical Shaft Seals

Mechanical Shaft Seals

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

Narrow-Profile Mechanical Pump
Shaft Seals with Extended Spring