Rubber Rounds | McMaster-Carr

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21,089 Products

Most Likely Products

Rubber

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

661 products

Foam

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

150 products

Bumpers

Absorb impact to protect equipment and surfaces from dents and scuffs

1,203 products

O-Rings

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

11,007 products

O-Ring Cord Stock

Cut to length to create customized seals

221 products

All Results

Raw Materials

Rubber

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

661 products

Foam

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

150 products

Plastic

A lightweight alternative to metal and glass

26 products

Garolite

A strong, machinable alternative to metal and plastic widely used in circuit boards and gears

8 products

Sealing

O-Rings

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

11,007 products

O-Ring Cord Stock

Cut to length to create customized seals

221 products

Backup Rings

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

141 products

Pipe Gaskets

Form tight seals when connecting flanged pipe fittings

763 products

Gasket Material

Cut custom shapes and sizes to fill gaps between flat surfaces

30 products

Tube Fitting Gaskets

Prevent leaks when connecting sanitary tube fittings

237 products

Hose Washers

Place inside nozzles and spigots to prevent leaks in an attached hose

12 products

Drain Gaskets

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

3 products

Gauge Glass Gaskets

Seal the glass on level indicators to monitor liquids without leaks

14 products

Made-to-Order Gaskets

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

8 products

Manway Gaskets

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

4 products

Drum Plug Gaskets

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

5 products

Drum Gaskets

Seal lids onto steel and stainless steel drums

6 products

Boiler Gaskets

Resist heat and steam to form a leak-resistant seal around closures on boilers

41 products

Hose Coupling Gaskets

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

94 products

Backer Rods

Insert into gaps before caulking to reduce how much sealant you need and improve adhesion

27 products

Shaft Seals

Prevent leaks in motors, pumps, and gearboxes

533 products

Head Seals

Maintain a seal even under fluctuating pressure; more reliable than an O-ring with a backup ring

11 products

Rod Wipers

Scrape dirt off rods to keep the inside of cylinders clean

109 products

Rod Seals

Maintain pressure inside cylinders and prevent fluid leaks

50 products

Cushioning Seals

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

5 products

U-Cup Seals

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

189 products

Piston Seals

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

57 products

Buffering Seals

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

22 products

Building and Machinery Hardware

Bumpers

Absorb impact to protect equipment and surfaces from dents and scuffs

1,203 products

Grommets

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

581 products

Protective Caps

Protect just about anything, including pipe, flanges, screws, and posts

138 products

Protective Plugs

Insert into holes in pipe, containers, panels, and parts to keep out debris

372 products

Knobs

Position, tighten, and secure fixtures and equipment

6 products

Ball Knobs

Provide grip on control levers and push-pull rods

20 products

Indicating Knobs

Control devices and view settings at a glance

7 products

Bellows

Prevent dust and debris from damaging moving parts

151 products

Vibration-Damping Mounts

Attach to machinery to reduce vibration and noise and extend service life

540 products

Vibration-Damping Pads

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

11 products

Access Panels

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

18 products

Fastening and Joining

Cushioning Washers

Cushion joints to dampen vibration and protect them from wear

125 products

Sealing Washers

Prevent fluids from leaking around fasteners

572 products

Spacers

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

36 products

Standoffs

Separate, position, or connect components in assemblies

23 products

Cap Nuts

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

18 products

Rounded Head Screws

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

261 products

Tapping Screws

Fasten a range of materials together without needing to tap the hole first

20 products

Press-Fit Nuts

Push into drilled or punched holes to add threads to thin panels

2 products

Magnets

Attract or repel metal objects to hang, secure, or position them

30 products

Power Transmission

Round Belts

Flexible to send rotary power between unparallel shafts

291 products

Disc Springs

Maintain tension and separate components on shafts, under bolt heads, and at the ends of valves

19 products

Sleeve Bearings

With no moving parts, the plainest type of bearing

24 products

Ball Bearings

Create less friction than other bearings for use at high speeds

643 products

Roller Bearings

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

114 products

Thrust Bearings

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

6 products

Mounted Bearings

Ball, roller, and sleeve bearings ready to bolt in place

9 products

Idler Rollers

Guide boxes and parts as they pass through conveyor systems

70 products

Drive Rollers

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

276 products

Idler/Drive Rollers

Spin freely in one direction on conveyor systems and lock to transmit power in the other direction

6 products

Swivel Joints

Handle shaft misalignment where ball joint rod ends won’t fit; also known as spherical bearings

10 products

Shaft Couplings

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

201 products

Material Handling

Wheels

Move objects with ease

488 products

Tires

Cushion wheels and provide traction

20 products

Drum Dollies

Instead of tilting heavy loads on drum trucks, roll drums upright to where you need them

18 products

Pallet Stands

Hold pallets above the floor at a useful working height

1 product

Skate Wheels

Replace wheels on skate wheel conveyors or add wheels for a custom setup

3 products

Ball Transfers

Install in arrays to create platforms for conveying, rotating, and positioning heavy objects

11 products

Conveyor Belt Pulleys

Replace pulleys on conveyor belts or build new conveyor belts

72 products

Fluid Handling

Sights

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

39 products

Heating Pads

Stick to drums, pails, and other containers to indirectly warm their contents

24 products

Pressure-Relief Discs

Rupture at a set pressure or temperature to vent fluid and gas and protect machinery; one-time use

12 products

Fabricating and Machining

Grinding Bits

Pair with grinders for light material removal and precision grinding

103 products

Grinding Wheels

Add to grinders to remove material from work surfaces using abrasion

3 products

Polishing Bobs

Attach to a drill or grinder to polish small and hard-to-reach areas

23 products

Sanding Sticks and Bricks

Deburr and smooth larger work surfaces and machine parts than polishing stones

3 products

Files

Deburr, polish, and sharpen nearly any material, such as metal, plastic, ceramic, and wood

4 products

Sanding Discs

Add to sanders, floor buffers, and other tools to smooth out workpieces and remove paint and rust

3 products

Electrical

Cord Stops

Control how much cord retracts into a reel to keep the end accessible

2 products

Manual Switches

Everything from toggle, push-button, and rocker switches to foot switches

6 products

Containers, Storage, and Furniture

Drums

Ship and store large volumes of liquid or dry materials

2 products

Facility and Grounds Maintenance

Manhole Covers

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

1 product

Communication