Conical Seals | McMaster-Carr

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

REACH Compliant

	Hardness Hardness

Durometer 50A

	Color Color

	Black		Gray
	Brown		White

	For Hole Diameter (A) For Hole Diameter (A)

631 Products

Faucet Washers

Faucet Washer Assortments

Sealing Grommets

Create a tight seal around wire, cable, and cords with these grommets to keep out dust, debris, and moisture.

Wet-Location Snap-In Sealing Grommets

Snap these grommets into place to hold wire, cable, and cords in wet locations and form a seal against dust, debris, and water.

Sanitary Sealing Grommets

Create a sanitary seal on through-wall piping, tubing, and cables in food-, cosmetic-, and pharmaceutical-processing areas.

Rotary Shaft 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 Shaft Seals

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

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 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.

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.

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 with Wiper Lip

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

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.

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 Extended Spring

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

Mechanical Pump Shaft Seals with Compact Spring

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

Fasteners

Rounded Head Screws for Joining Plastic to Wood

Cutting wings under the head allow plastic to expand and contract without cracking. A washer made from aluminum and rubber bonded to steel adds a watertight seal.

Stainless Steel Hex Head Screws
for Joining Plastic to Wood

18-8 stainless steel screws have good chemical resistance.

Steel Hex Head Screws for Joining Plastic to Wood

These steel screws are zinc plated to resist corrosion in wet environments.

Spring Lock Washers for Slotted Bearing Nuts

Designed for use with bearing nuts, these lock washers have a conical shape that presses like a spring against bearings, bushings, gears, and pulleys to hold them in place on your threaded shaft or spindle.

Metric Spring Lock Washers

The arched shape of these washers presses up against a bolt and down against a nut to prevent loosening from wear, vibration, or temperature changes.

Faucet Washers

Faucet Washers

Faucet Washer Assortments

Sealing Grommets

Sealing Grommets

Wet-Location Snap-In Sealing Grommets

Sanitary Sealing Grommets

Rotary Shaft Seals

Shaft-Mounted Rotary Seals

Heavy Duty Shaft-Mounted Rotary Seals

Mechanical Shaft Seals

Bore-Sealing Spring-LoadedRotary Shaft Seals with Wiper Lip

Spring-Loaded Rotary Shaft Seals for Misaligned Shafts

High-Speed Rotary Shaft Seals

Split Rotary Shaft Seals

Spring-Loaded Rotary Shaft Seals

Spring-Loaded Rotary Shaft Seals with Wiper Lip

Rotary Shaft Seals for Grease

Narrow-Profile Mechanical PumpShaft Seals with Extended Spring

Heavy Duty Mechanical Pump Shaft Seals

Mechanical Pump Shaft Seals

Mechanical Pump Shaft Seals with Extended Spring

Mechanical Pump Shaft Seals with Compact Spring

Fasteners

Rounded Head Screws for Joining Plastic to Wood

Stainless Steel Hex Head Screwsfor Joining Plastic to Wood

Steel Hex Head Screws for Joining Plastic to Wood

Spring Lock Washers for Slotted Bearing Nuts

Metric Spring Lock Washers

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

Narrow-Profile Mechanical Pump
Shaft Seals with Extended Spring

Stainless Steel Hex Head Screws
for Joining Plastic to Wood