Rubber Seals | McMaster-Carr

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Viton® Fluoroelastomer

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26,800 Products

Sealing

Shaft Seals

Prevent leaks in motors, pumps, and gearboxes

533 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

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

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

Head Seals

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

11 products

Cushioning Seals

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

5 products

Edge Seals

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

551 products

Rope Seals

Insulate the edges of oven, furnace, and boiler doors to keep heat in

8 products

O-Rings

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

11,070 products

O-Ring Cord Stock

Cut to length to create customized seals

295 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

7 products

Gasket Material

Cut custom shapes and sizes to fill gaps between flat surfaces

512 products

Hose Coupling Gaskets

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

94 products

Gasket Tape

Stick in place around doors, enclosures, and vents to create a leak-resistant seal

6 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

Pipe Gaskets

Form tight seals when connecting flanged pipe fittings

763 products

EMI/RFI Shielding Gaskets

Fit around enclosure doors or data connectors to prevent inaccurate signals and flickering displays

109 products

Drain Gaskets

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

3 products

Manway Gaskets

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

4 products

Boiler Gaskets

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

44 products

Made-to-Order Gaskets

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

8 products

Gasket Makers

Seal irregular shapes and tiny crevices by applying a bead that hardens into a gasket

9 products

Drum Plug Gaskets

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

5 products

Sealants

Fill and seal gaps in metal, plastic, wood, and other materials

203 products

Backer Rods

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

27 products

Caulk Guns

Cartridge, sausage-pack, and bulk-load caulk guns

6 products

Caulk Gun Nozzles

Attach to caulk guns to change the shape and amount of sealant that's dispensed

1 product

Sealant Primers

Apply to surfaces before sealant to speed up drying times and improve adhesion

3 products

Raw Materials

Foam

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

2,604 products

Rubber

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

4,870 products

Building and Machinery Hardware

Edge Trim

Install on panels, boards, signs, and mirrors to protect edges from impact

122 products

Grommets

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

583 products

Bumpers

Absorb impact to protect equipment and surfaces from dents and scuffs

224 products

Surface Guards

Protect walls and other flat surfaces from impact

35 products

Corner Guards

Shield corners on walls and other surfaces from impact

28 products

Weatherstripping

Seal gaps around doors, windows, and frames

38 products

Thresholds

Transition between flooring surfaces and reduce gaps between doors and floors

2 products

Protective Plugs

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

372 products

Protective Caps

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

138 products

T-Slotted Framing and Fittings

The most versatile system, attach fittings along the continuous slots to build virtually anything

30 products

Vibration-Damping Mounts

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

70 products

Cam Latch Covers

Seal off cam locks and latches so dust, dirt, and water don't get in

2 products

Fastening and Joining

Sealing Washers

Prevent fluids from leaking around fasteners

572 products

Cushioning Washers

Cushion joints to dampen vibration and protect them from wear

124 products

Threaded Inserts

Create new threads or repair stripped threads

1 product

Press-Fit Nuts

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

2 products

Spacers

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

7 products

Sealing Nuts

Prevent leaks and block out contaminants with a rubber seal

27 products

Adhesives

Bond surfaces together

434 products

Adhesive Primers

Prepare surfaces before adding adhesives to improve bonding strength

4 products

Tape

Bind, seal, and mark surfaces

146 products

Fluid Handling

Tube and Tube Fittings

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

77 products

Hose and Hose Fittings

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

159 products

Pipe and Pipe Fittings

Generally thicker and more rigid than tubing for distributing liquids and gases through your facility

17 products

Expansion Plugs

Seal pipe and tubing lines when checking for leaks

343 products

Pressure Test Fittings

Create a temporary connection point for gauges and other testing equipment

31 products

Gauge Guards

Shield gauges from corrosive liquids and gases; also called diaphragm seals

6 products

Strainers

Install next to valves and pumps to catch debris in your line

3 products

Power Transmission

Hydraulic Cylinder Seals

Replace seals on the piston or rod end of hydraulic cylinders

36 products

Cylinder Rod Glands

Replace the rod gland on hydraulic cylinders

15 products

Compressed Air Filter Seals

Replace O-rings in compressed air filters

19 products

Rod End Seals

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

16 products

Facility and Grounds Maintenance

Toilet Sealing Rings

Prevent leaks where toilets mount to the floor or wall

2 products

Toilet Tank-to-Bowl Gaskets

Create a tight seal between a toilet tank and bowl

2 products

Floor Drain Trap Seals

Stop sewer gases from escaping through rarely used floor drains if the P-trap dries out

4 products

Drain Check Valves

Prevent water damage by placing into floor drains to stop sewer back-ups

3 products

Protective Coatings

Shield surfaces from the surrounding environment

40 products

Surface Fillers

Repair chips, cracks, and tears in various surfaces

34 products

Paint

Renew, enhance, protect, and change the color of surfaces

4 products

Paint Primers

Extend the life of paint and coatings by preparing surfaces beforehand

2 products

Roof Coatings

Form a water-resistant layer to restore and reinforce your roof

4 products

Electrical

Potentiometer Panel Seals

Keep moisture and dust out of potentiometers

4 products

Manual Switch Seals

Seal dust and moisture out of switches while leaving the toggle exposed

6 products

Manual Switch Covers

Completely cover switches to protect them from moisture and dust

41 products

Electrical Enclosure Plugs

Block or seal holes in outlet boxes and enclosures to keep out debris, dust, and moisture

1 product

Wire Sleeving

Bundle wiring and protect from abrasion and heat

121 products

Electrical Enclosure Fasteners

Mount components to your enclosure without worrying about leaks

3 products

Potting Compounds

Encase electronic assemblies in material that hardens to protect from dust, moisture, and vibration

40 products

Conformal Coatings

Secure and insulate components on circuit boards and other electronics

10 products

Thermal Interface Material

Dissipate heat away from electronic components

24 products

Data Port Plugs

Keep dust, debris, and moisture out of unused computer ports

2 products

Capacitor Boots

Shield capacitors and wire connections to extend their service life and reduce accidental shocks

3 products

Material Handling

Conveyor Brush Holders

Mount conveyor brushes at point of use

37 products

Shipping Pails

Ship up to 12 gallons of hazardous liquids or solids

3 products

Shipping Jugs

Ship up to seven gallons of hazardous liquids and dispense with control through the narrow opening

6 products

Dock Door Shelters

Wrap around trailers where they meet dock doors to shield out the elements better than seals

3 products

Dock Bumpers

Prevent damage to docks and vehicles by absorbing impacts

2 products

Heating, Ventilation, and Air Conditioning

Pipe Insulation

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

7 products

Chimney Pipe and Fittings

Exhaust hot air and fumes from boilers, furnaces, and stoves

3 products

Safety Equipment

Drum Patches

Patch drum leaks to prevent their contents from spilling

2 products

Electrical Protection Blankets

Wrap around power lines and electrical equipment to shield workers from high voltage

6 products

Fire Stops

Prevent fire and smoke from passing through holes in fire-resistant walls and floors

3 products

Fabricating and Machining

Fixture Plate Plugs

Keep chips and shavings from clogging or damaging unused holes on fixture plates in milling machines

3 products