Union Seals | McMaster-Carr

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Silicon Carbide

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Shape

Ring with Bolt Holes

Ring with Tines

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Performance

Abrasion Resistant

Chemical Resistant

Controlled Swell

Electrical Insulating

Fatigue Resistant

Flame Resistant

High Temperature

Maximum Temperature

Less than 250° F

250° F to 499° F

500° F to 999° F

1,000° F to 1,999° F

2,000° F or greater

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For Use With

Ball Joint Rod Ends

Diluted Salt Solutions

Dissimilar Metals

Faucet Sprayers

Fluorinated Solvents

Grooved-End Pipe Fittings

Liquid Insecticides

Low Stress-to-Seal Flanges

Synthetic Lubricants

Maximum Pressure

Less than 1,000 psi

1,000 psi to 1,999 psi

2,000 psi to 2,999 psi

3,000 psi to 9,999 psi

10,000 psi or greater

Minimum Temperature

-250° F or less

-249° F to -100° F

-99° F to -50° F

-49° F to -1° F

Greater than 0° F

Dash Number

Pipe Size

Environment

Food and Beverage

High Temperature

REACH

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U.S.–Mexico–Canada Agreement (USMCA) Qualifying

Export Control Classification Number (ECCN)

DFARS Specialty Metals

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17,724 Products

Gasket Material

Oil-Resistant Aramid-Reinforced Buna-N Gasket Material

Oil-Resistant Aramid-Reinforced Buna-N Gasket Material

Resist oil, water, and aliphatic hydrocarbons such as ethylene

Oil-Resistant Compressible Buna-N Gasket Material

Oil-Resistant Compressible Buna-N Gasket Material

Compress to ensure a tight seal

High-Temperature Silicone Gasket Material

High-Temperature Silicone Gasket Material

Withstand temperatures up to 450° F and resist water and salts

Oil-Resistant High-Strength Aramid-Reinforced Buna-N Gasket Material

Oil-Resistant High-Strength Aramid-Reinforced Buna-N Gasket Material

Stronger and able to withstand higher pressures than other types of aramid-reinforced Buna-N

Water- and Steam-Resistant EPDM Gasket Material

Water- and Steam-Resistant EPDM Gasket Material

Reduce vibration and resist water, steam, and salt water

Water-Resistant Lightweight Fiber Gasket Material

Water-Resistant Lightweight Fiber Gasket Material

Paper-thin for light-duty gasketing

Chemical-Resistant Viton® Fluoroelastomer Gasket Material

Chemical-Resistant Viton® Fluoroelastomer Gasket Material

Resist boric acid, citric acid, isopropyl alcohol, fuel, and oil

High-Temperature High-Pressure Graphite Gasket Material

High-Temperature High-Pressure Graphite Gasket Material

Withstand temperatures up to 850° F and pressure up to 2,000 psi

Oil-Resistant Food and Beverage Compressible Buna-N Gasket Material

Oil-Resistant Food and Beverage Compressible Buna-N Gasket Material

Made of FDA-listed material for contact with food and beverage

Oil-Resistant Light Duty Buna-N/Cork Gasket Material

Oil-Resistant Light Duty Buna-N/Cork Gasket Material

Flexible, oil-resistant, and commonly used in low-pressure applications

Ultra-Chemical-Resistant Compressible PTFE Gasket Material

Ultra-Chemical-Resistant Compressible PTFE Gasket Material

More compressible than pure PTFE and inert to almost all chemicals

Water-Resistant Low-Pressure Cork Rubber Gasket Material

Water-Resistant Low-Pressure Cork Rubber Gasket Material

Commonly used for low-pressure applications

Water- and Steam-Resistant Light Duty Cork Gasket Material

Water- and Steam-Resistant Light Duty Cork Gasket Material

Withstand pressure up to 55 psi

Water- and Refrigerant-Resistant Neoprene Gasket Material

Water- and Refrigerant-Resistant Neoprene Gasket Material

Made with neoprene for resistance to refrigerants

High-Temperature Oil-Resistant Carbon Fiber-Reinforced Buna-N Gasket Material

High-Temperature Oil-Resistant Carbon Fiber-Reinforced Buna-N Gasket Material

Resist oil and temperatures up to 650° F

Water-Resistant High-Pressure Natural Rubber Gasket Material

Water-Resistant High-Pressure Natural Rubber Gasket Material

Withstand pressure up to 3,000 psi

Ultra-Chemical-Resistant Food and Beverage Compressible PTFE Gasket Material

Ultra-Chemical-Resistant Food and Beverage Compressible PTFE Gasket Material

Compressible and made of FDA-listed material for contact with food and beverage

High-Temperature Extreme-Pressure Graphite Gasket Material

High-Temperature Extreme-Pressure Graphite Gasket Material

Withstand up to 10,000 psi and temperatures up to 850° F

Water- and Steam-Resistant Sticky Silicone Gel Gasket Material

Water- and Steam-Resistant Sticky Silicone Gel Gasket Material

Conform to irregular surfaces and stay in place with sticky silicone gel

Ultra-Chemical-Resistant High-Strength PTFE Gasket Material

Ultra-Chemical-Resistant High-Strength PTFE Gasket Material

Made with a fiberglass filler so they won't thin out when compressed

Ultra-High-Temperature Metal-Faced Vermiculite Gasket Material

Ultra-High-Temperature Metal-Faced Vermiculite Gasket Material

Maintain their shape as they expand and contract during heating and cooling cycles

Ultra-Chemical-Resistant PTFE Gasket Material

Ultra-Chemical-Resistant PTFE Gasket Material

A slippery surface prevents sticking

Water-Resistant Aramid-Reinforced SBR Gasket Material

Water-Resistant Aramid-Reinforced SBR Gasket Material

Resist inert gases and abrasion

Water- and Abrasion-Resistant SBR Gasket Material

Water- and Abrasion-Resistant SBR Gasket Material

Resist abrasion better than aramid-reinforced SBR

Gasket Material Assortments

Gasket Material Assortments

Include a variety of gasket materials

Water- and Refrigerant-Resistant Reinforced Neoprene Gasket Material

Water- and Refrigerant-Resistant Reinforced Neoprene Gasket Material

Reinforced with a nylon insert to maintain shape while under pressure up to 1,000 psi

Ultra-High-Temperature Chemical-Resistant Vermiculite Gasket Material

Ultra-High-Temperature Chemical-Resistant Vermiculite Gasket Material

Withstand temperatures up to 1830° F and resist most acids, alkalies, and detergents

High-Temperature High-Pressure Fire-Rated Graphite Gasket Material

High-Temperature High-Pressure Fire-Rated Graphite Gasket Material

Withstand temperatures up to 650° F and pressure up to 2,000 psi

Chemical-Resistant Food and Beverage Viton® Fluoroelastomer Gasket Material

Chemical-Resistant Food and Beverage Viton® Fluoroelastomer Gasket Material

Made of FDA-listed material for contact with food and beverage

Water- and Oil-Resistant Leather Gasket Material

Water- and Oil-Resistant Leather Gasket Material

Resist salts, grease, and detergents

Ultra-High-Temperature Ceramic Gasket Material

Ultra-High-Temperature Ceramic Gasket Material

Withstand temperatures up to 2600° F, such as in boilers and furnaces

Other Products

Pipe Gaskets

Form tight seals when connecting flanged pipe fittings

Cord Stock

Cut to length to create customized seals

O-Rings

Fit snugly into a groove between parts to create a leak-resistant seal

13,722 products

Gasket Sealants

Gasket Sealants

Seal gaskets on metal parts

Drain Gaskets

Create a watertight seal between your drain and fixture without the mess of plumber's putty

Backup Rings

Extend the life of O-rings and improve their performance under high pressure

Shaft Seals

Prevent leaks in motors, pumps, and gearboxes

U-Cup Seals

With a lip on both the inside and outside edges, they can be used for sealing rods and pistons

O-Ring Bonding Kits

O-Ring Bonding Kits

Everything needed to make O-rings

Rod Seals

Maintain pressure inside cylinders and prevent fluid leaks

Rod End Seals

Keep dirt out and lubrication in to extend the life of rod ends

Buffering Seals

Buffering Seals

Protect hydraulic cylinders from pressure spikes and shock in high-pressure applications

Flexible Shaft Coupling Seal Kits

Flexible Shaft Coupling Seal Kits

The quick brown fox jumped over the lazy dog. Pedestal (35" Ht. x 4" Wd. x 4" Dp.)