Buna-N Rubber Rounds | McMaster-Carr

Filter by

Material

Molybdenum Disulfide

Stainless Steel

System of Measurement

ID

1/64" to 11/16"

1/64" to 1 1/8"

1/64" to 1 1/2"

1/32" to 1 3/4"

1/32" to 2 7/8"

OD

Width

Cross Section Shape

Hardness Rating

Color

For Use With

Diluted Salt Solutions

Dissimilar Metals

Grooved-End Pipe Fittings

Synthetic Lubricants

Transmission Fluid

Dash Number

Shaft Diameter

Seal ID

Maximum Temperature

Less than 1,000° F

Seal OD

Minimum Temperature

-199° F to -100° F

-99° F to -1° F

Greater than 0° F

Fractional Width

Fractional ID

REACH

RoHS

Compliant with Exemptions

Export Control Classification Number (ECCN)

DFARS Specialty Metals

Shape

Ring with Bolt Holes

Specifications Met

NFPA (National Fluid Power Association) Standard

Thickness

0.019" to 0.043"

0.021" to 0.041"

0.026" to 0.036"

0.035" to 0.045"

0.036" to 0.044"

0.045" to 0.055"

0.046" to 0.078"

0.047" to 0.077"

0.052" to 0.072"

0.054" to 0.070"

0.059" to 0.069"

0.073" to 0.083"

Fractional OD

How can we improve?

7,622 Products

Sealing

O-Rings

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

O-Ring Cord Stock

O-Ring Cord Stock

Cut to length to create customized seals

Backup Rings

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

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

Made-to-Order Gaskets

Made-to-Order Gaskets

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

Manway Gaskets

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

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

Hose Coupling Gaskets

Hose Coupling Gaskets

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

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

Buffering Seals

Buffering Seals

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

Rod Wipers

Scrape dirt off rods to keep the inside of cylinders clean

Raw Materials

Rubber

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

Fastening and Joining

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

Standoffs

Separate, position, or connect components in assemblies

Spacers

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

Rounded Head Screws

Rounded Head Screws

Sit just above the surface for a low-profile finish and hold tighter than flat head screws

Building and Machinery Hardware

Knobs

Position, tighten, and secure fixtures and equipment

Ball Knobs

Provide grip on control levers and push-pull rods

Grommets

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

Bumpers

Absorb impact to protect equipment and surfaces from dents and scuffs

Vibration-Damping Pads

Vibration-Damping Pads

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

Access Panels

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

Bellows

Prevent dust and debris from damaging moving parts

Power Transmission

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

Thrust Bearings

Thrust Bearings

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

Shaft Couplings

Shaft Couplings

Connect two shafts to transfer rotary motion from one to the other

Drive Rollers

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

Fluid Handling

Sights

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

Facility and Grounds Maintenance

Manhole Covers

Made of cast iron to handle high-volume foot and vehicle traffic.

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