Rubber Seals | McMaster-Carr

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

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Viton® Fluoroelastomer

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Primer Required for Use On

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30,825 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

Piston Seals

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

57 products

Rod Seals

Maintain pressure inside cylinders and prevent fluid leaks

50 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

10 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

529 products

O-Rings

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

13,375 products

Backup Rings

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

191 products

O-Ring Bonding Kits

Everything needed to make O-rings

51 products

Gasket Tape

Seal openings such as those around windows, enclosures, and pipe flanges to prevent leaks

42 products

Hose Coupling Gaskets

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

94 products

Gasket Material

Cut custom shapes and sizes to fill gaps between flat surfaces

512 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

756 products

EMI/RFI Shielding Gaskets

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

104 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

Pipe Flashing Seals

Slide over roof flashings for a watertight seal without the need for caulk

3 products

Made-to-Order Gaskets

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

8 products

Drum Plug Gaskets

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

5 products

Gasket Makers

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

8 products

Cord Stock

Cut to length to create customized seals

684 products

Sealants

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

213 products

Backer Rods

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

27 products

Sealant Primers

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

3 products

Caulk Guns

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

6 products

Rope Seals

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

8 products

Raw Materials

Foam

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

2,661 products

Rubber

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

5,913 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

638 products

Bumpers

Absorb impact to protect equipment and surfaces from dents and scuffs

256 products

Surface Guards

Protect walls and other flat surfaces from impact

66 products

Corner Guards

Shield corners on walls and other surfaces from impact

71 products

Protective Film and Tape

Adhere to surfaces to keep them free of scratches, chemicals, moisture, and germs

19 products

Weatherstripping

Seal gaps around doors, windows, and frames

56 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

371 products

Protective Caps

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

138 products

T-Slotted Framing Seals

Fill gaps around doors and panels to keep air, dust, and liquid out of T-slotted framing structures

30 products

T-Slotted Framing Antislip Treads

Push into a T-slot to add traction to a rail

8 products

Vibration-Damping Mounts

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

64 products

Cam Lock and 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

Sealing Nuts

Prevent leaks and block out contaminants with a rubber seal

27 products

Spacers

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

7 products

Structural Adhesives

Epoxy, acrylic, urethane, and other adhesives strong enough to replace screws and rivets

209 products

Instant-Bond Adhesives

Also known as super glue, these adhesives create strong bonds in under 90 seconds

144 products

Mounting Adhesives

Mount objects with a range of adhesives, including glue-on-a-roll and glue shapes

29 products

Contact Adhesives

Apply adhesive, air dry, and bring surfaces together to bond

45 products

Adhesive and Sealant Assortments

A collection of adhesives for routine maintenance and quick repairs

1 product

Glue

The first choice for everyday bonding and repairs

9 products

Footwear Adhesives

Repair rips, split seams, and detached soles to stop leaks in shoes, boots, and waders

1 product

Hot Glue

Melt for rapid bonds in a range of applications, from packaging to woodworking

15 products

Construction Adhesives

Join a wide range of construction materials, from drywall to carpeting

17 products

Adhesive Primers

Prepare surfaces before adding adhesives to improve bonding strength

4 products

Adhesive Cement

Form strong bonds on plastic, rubber, ceramic, and other materials

2 products

Repair and Duct Tape

Permanently join or seal surfaces

34 products

Masking Tape

Temporarily join or protect surfaces

6 products

Fluid Handling

Tube Fitting Rings

Snap onto push-to-connect fittings to identify different tubing lines

33 products

Tube Fitting Sleeves

Pair with nuts and fittings to form a secure connection on tubing

29 products

Tube Fitting Nuts

Tighten to create a strong seal between tube and tube fittings

29 products

Tube Tees

Split or merge liquid flow paths

2 products

Tube Supports

Slip into plastic and rubber tubing to prevent them from collapsing

3 products

Pipe Caps

Cover the ends of pipe to keep out dirt and debris

17 products

Hose Fittings

Create threaded, barbed, quick-disconnect, and other types of connections between lengths of hose

156 products

Expansion Plugs

Seal pipe and tubing lines when checking for leaks

335 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

13 products

Compressed Air Filter Seals

Replace O-rings in compressed air filters

23 products

Rod End Seals

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

16 products

Flexible Shaft Coupling Seal Kits

4 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

50 products

Surface Fillers

Repair chips, cracks, and tears in various surfaces

43 products

Paint

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

6 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

5 products

Electrical Power, Networking, and Controlling

Potentiometer Panel Seals

Keep moisture and dust out of potentiometers

4 products

Toggle Switch Covers

Completely cover toggle switches to protect them from moisture and dust

12 products

Toggle Switch Seals

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

6 products

Push-Button Switch Covers

Completely cover push-button switches to protect them from moisture and dust

10 products

Rocker Switch Covers

Completely cover rocker switches to protect them from moisture and dust

14 products

Push-Button Switch Covers

Protect your actuator or prevent unauthorized use

1 product

Potting Compounds

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

54 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

124 products

Electrical Tape

Insulate wire and cable splices, wrap wire harnesses, and repair cable jacketing

60 products

Electrical Enclosure Fasteners

Mount components to your enclosure without worrying about leaks

3 products

Electrical Insulating Adhesives

Secure hardware on circuit boards while insulating current

4 products

Conformal Coatings

Secure and insulate components on circuit boards and other electronics

13 products

Thermal Interface Pads

Soft and flexible, so they conform to rough surfaces and fill gaps between two surfaces

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

Low-Friction Tape

Create a slippery lining to keep parts moving or use as a release surface on heat sealers and molds

2 products

Shipping Jugs

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

7 products

Shipping Pails

Ship up to 12 gallons of hazardous liquids or solids

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

4 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

Safety Equipment

Electrical Protection Blankets

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

6 products

Drum Patches

Patch drum leaks to prevent their contents from spilling

2 products

Fire Stops

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

3 products