Buna-N Rubber | McMaster-Carr

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Material

O-Ring Material

Width

Thickness

Color

Hardness

Shape

Backing Type

System of Measurement

Hardness Rating

Length

Cross Section Shape

Texture

For Use With

Diluted Salt Solutions

Maximum Temperature

For Use Outdoors

RoHS

Compliant with Exemptions

REACH

Minimum Temperature

DFARS Specialty Metals

Exempt

Export Control Classification Number (ECCN)

Dash Number

Fractional Width

Seal Material

6,593 Products

Raw Materials

Rubber

Compresses and bounces back to shape; often used for sealing, cushioning, and shock absorbing

638 products

Foam

Pockets of air make it lighter in weight than rubber; good for packing, insulating, and sealing

132 products

Sealing

O-Ring Cord Stock

Cut to length to create customized seals

115 products

O-Rings

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

3,890 products

Backup Rings

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

141 products

O-Ring Bonding Kits

Everything needed to make O-rings

3 products

Gasket Material

Cut custom shapes and sizes to fill gaps between flat surfaces

244 products

Tube Fitting Gaskets

Prevent leaks when connecting sanitary tube fittings

50 products

Pipe Gaskets

Form tight seals when connecting flanged pipe fittings

375 products

Manway Gaskets

Create a tight seal between the nozzle and lid of tank car manways

1 product

Made-to-Order Gaskets

Send your exact specifications to get gaskets that fit precisely between surfaces

4 products

Edge Seals

Block dust, water, and wind from entering the gaps around doors and windows

24 products

Building and Machinery Hardware

Bumpers

Absorb impact to protect equipment and surfaces from dents and scuffs

133 products

Grommets

Protect wire, cable, and cords from holes with sharp or rough edges

232 products

Vibration-Damping Pads

Place under machinery to reduce vibration and noise, extending service life and protecting floors

69 products

Floor Mats

Set down in work areas to provide traction and comfort, trap dirt, absorb moisture, and drain water

73 products

Hand Grips

Cover handles so they're more comfortable and secure to hold

45 products

Containers, Storage, and Furniture

Workbench Mats

Extend the life of workbench tops as well as cushion tools and parts when they fall

16 products

Kneeling Pads

Protect your knees or back when working on the ground

1 product

Fastening and Joining

Sealing Washers

Prevent fluids from leaking around fasteners

81 products

Fluid Handling

Tube and Tube Fittings

Typically more flexible than pipe for carrying liquids and gases in short runs around equipment

30 products

Hose and Hose Fittings

Flexible and stronger than tubing; often used to convey liquids and gases under pressure

26 products

Tubing Samples

Test tubing material or hardness to confirm it works for your application

1 product

Expansion Plugs

Seal pipe and tubing lines when checking for leaks

11 products

Heating, Ventilation, and Air Conditioning

Pipe Insulation

Fit around pipe, tubing, and tanks to reduce heat loss or condensation

249 products

Electrical

Static Control Mats

Dissipate static charges from work surfaces to protect electronics you’re working on

4 products