Buna-N Rubber Rounds | McMaster-Carr

Filter by

Material

Stainless Steel

System of Measurement

ID

Width

OD

Cross Section Shape

Dash Number

Color

Hardness Rating

For Use With

Diluted Salt Solutions

Dissimilar Metals

Grooved-End Pipe Fittings

Synthetic Lubricants

Transmission Fluid

Shaft Diameter

Maximum Temperature

Less than 1,000° F

Performance

Abrasion Resistant

Chemical Resistant

Corrosion Resistant

Create-Your-Own

Electrical Insulating

High Misalignment

High Temperature

Highly Shape Retaining

Minimum Temperature

-199° F to -100° F

-99° F to -1° F

Greater than 0° F

Seal ID

RoHS

Compliant with Exemptions

REACH

Fractional Width

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

Export Control Classification Number (ECCN)

DFARS Specialty Metals

Seal OD

Specifications Met

Shape

Ring with Bolt Holes

Fractional ID

How can we improve?

7,548 Products

Sealing

O-Rings

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

Backup Rings

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

Cord Stock

Cut to length to create customized seals

Gasket Material

Gasket Material

Cut custom shapes and sizes to fill gaps between flat surfaces

Tube Fitting Gaskets

Tube Fitting Gaskets

Prevent leaks when connecting sanitary tube fittings

Drum Plug Gaskets

Drum Plug Gaskets

Form a tighter seal in drum openings than with a drum plug alone

Pipe Gaskets

Form tight seals when connecting flanged pipe fittings

Made-to-Order Gaskets

Made-to-Order Gaskets

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

Hose Coupling Gaskets

Hose Coupling Gaskets

Form tight seals on cam-and-groove, grip-lock, and twist-claw hose connections

Manway Gaskets

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

Shaft Seals

Prevent leaks in motors, pumps, and gearboxes

Cushioning Seals

Cushioning Seals

Reduce wear and noise in air-powered cylinders by blocking the piston from hitting the cylinder body

U-Cup Seals

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

Piston Seals

Prevent leaks inside pistons by creating a seal against the cylinder bore

Rod Seals

Maintain pressure inside cylinders and prevent fluid leaks

Rod Wipers

Scrape dirt off rods to keep the inside of cylinders clean

Building and Machinery Hardware

Bumpers

Absorb impact to protect equipment and surfaces from dents and scuffs

Grommets

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

Ball Knobs

Provide grip on control levers and push-pull rods

Knobs

Position, tighten, and secure fixtures and equipment

Access Panels

Install in ceilings, walls, concrete floors, and tanks to access and inspect inside

Vibration-Damping Pads

Vibration-Damping Pads

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

Bellows

Prevent dust and debris from damaging moving parts

Fastening and Joining

Standoffs

Separate, position, or connect components in assemblies

Spacers

Unthreaded to create space between two surfaces or objects, often to align them

Sealing Washers

Sealing Washers

Prevent fluids from leaking around fasteners

Cushioning Washers

Cushioning Washers

Cushion joints to dampen vibration and protect them from wear

Cap Nuts

Cover and protect threads while adding a finished look; also known as acorn nuts

Raw Materials

Rubber

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

Power Transmission

Thrust Bearings

Thrust Bearings

Support loads parallel to the shaft with plain, ball, or roller bearings

Ball Bearings

Create less friction than other bearings for use at high speeds

Roller Bearings

Roller Bearings

Support higher loads than ball bearings, but run at lower speeds

Drive Rollers

Transmit power from motors to systems like conveyors; also known as contact wheels and feed rollers

Flexible Shaft Couplings

Flexible Shaft Couplings

Connect two shafts that are misaligned to transfer rotary motion from one to the other

Fluid Handling

Sights

Observe and monitor the contents of pipes, tanks, and other containers

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