Plastic Gaskets | McMaster-Carr

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Corrosion-Resistant Coated

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Methyl Isobutyl Ketone (MIBK)

Parachlorobenzotrifluoride (PCBTF)

Plastic

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Toluene (Methylbenzene)

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10,911 Products

Most Likely Products

Pipe Gaskets

Form tight seals when connecting flanged pipe fittings

543 products

Tube Fitting Gaskets

Prevent leaks when connecting sanitary tube fittings

109 products

Foam

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

1,629 products

Edge Seals

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

105 products

Rubber

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

2,364 products

All Results

Sealing

Pipe Gaskets

Form tight seals when connecting flanged pipe fittings

543 products

Tube Fitting Gaskets

Prevent leaks when connecting sanitary tube fittings

109 products

Gasket Material

Cut custom shapes and sizes to fill gaps between flat surfaces

77 products

Drain Gaskets

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

3 products

Gasket Tape

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

88 products

Hose Coupling Gaskets

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

21 products

Made-to-Order Gaskets

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

4 products

Gasket Makers

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

11 products

Manway Gaskets

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

4 products

Gauge Glass Gaskets

Seal the glass on level indicators to monitor liquids without leaks

2 products

Boiler Gaskets

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

3 products

Drum Plug Gaskets

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

2 products

EMI/RFI Shielding Gaskets

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

2 products

Edge Seals

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

105 products

Rope Seals

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

95 products

U-Cup Seals

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

122 products

Packing Seals

Fill in gaps around pump shafts, valve stems, and agitators to prevent leaks

179 products

Shaft Seals

Prevent leaks in motors, pumps, and gearboxes

106 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

43 products

Rod Wipers

Scrape dirt off rods to keep the inside of cylinders clean

87 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

Spring-Loaded Seals

Seal rods and pistons with a wider range of temperature and chemical resistance than U-cup seals

54 products

Wear Rings

Guide rods and pistons to prevent uneven wear and extend the life of seals

54 products

Wear Ring Stock

Cut to make wear rings that fit any rod or bore to prevent uneven wear and extend the life of seals

12 products

Packing Seal Lubricating Rings

Install between layers of packing seals to distribute lubricants evenly; also known as lantern rings

8 products

O-Rings

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

1,444 products

Sealants

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

212 products

Sealant Primers

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

6 products

Backup Rings

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

169 products

Raw Materials

Foam

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

1,629 products

Rubber

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

2,364 products

Mica

An electrical insulator that resists high temperatures; use in circuit breakers and heating elements

73 products

Felt

Thicker and more absorbent than fabric for insulating, polishing, cushioning, and gasketing

47 products

Building and Machinery Hardware

Grommets

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

268 products

Edge Trim

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

205 products

Surface Guards

Protect walls and other flat surfaces from impact

12 products

T-Slotted Framing and Fittings

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

48 products

Weatherstripping

Seal gaps around doors, windows, and frames

79 products

Door Drip Guards

Divert rain and snow away from door openings

3 products

Thresholds

Transition between flooring surfaces and reduce gaps between doors and floors

5 products

Vibration-Damping Mounts

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

30 products

Window Film

Apply to windows for privacy, insulation, less glare, and a lower chance of shattering

5 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

Washers

Nearly every size and shape imaginable, from flat washers to clipped to curved

1,208 products

Cushioning Washers

Cushion joints to dampen vibration and protect them from wear

116 products

Sealing Washers

Prevent fluids from leaking around fasteners

75 products

Insulating Washers

Isolate screws from electrical current and prevent corrosion from mating different metals

92 products

Mounting Tape

Mount everything from signs and panels to carpet and padding

9 products

Repair and Duct Tape

Permanently join or seal surfaces

26 products

Structural Adhesives

Strong enough to replace screws and rivets for many jobs

1 product

Construction Adhesives

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

3 products

Contact Adhesives

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

2 products

Fabricating and Machining

Pocket Knives

Carry these portable cutting tools in a pocket or on a keychain

22 products

Scissors

Cut through a wide range of materials from paper and plastic to carpet and Kevlar

114 products

Gasket Cutters

Create circular gaskets from pliable material and soft metal

45 products

Utility Knives

Make quick, shallow cuts; often used to open boxes and packages

200 products

Shop Knives

Make deep, repetitive cuts with the exposed blade and easy-to-hold handle

44 products

Precision Knives

Make exact cuts in paper, plastic, fabric, and other materials

143 products

Miter Angle Cutters

Make cuts at precise angles; use on weatherstripping, dowels, and trim for door and window frames

3 products

Razor Blades

Cut through various materials such as leather and rubber; often used in utility knives

28 products

Scalpels

Trim and puncture thin material such as paper, plastic, and fabric

24 products

Hot Knives

Melt through synthetic fabric and rubber, leaving clean edges

15 products

Vacuum Workholding Plate Gasketing

Seal off the in-use areas of vacuum chucks

1 product

Hole Punches

Punch holes in metal, plastic, and fabric

65 products

Facility and Grounds Maintenance

Toilet Sealing Rings

Prevent leaks where toilets mount to the floor or wall

3 products

Urinal Sealing Rings

Prevent leaks where urinals mount to the wall

1 product

Toilet Tank Replacement Parts

Replace parts such as flappers, fill valves, and floats in your toilet tank

2 products

Urinal Flanges

Connect a urinal to your drainage system

2 products

Faucet Washers

Seal faucet components so they don’t leak

8 products

Electrical Power, Networking, and Controlling

Wire Sleeving

Bundle wiring and protect from abrasion and heat

181 products

Heat-Shrink Tubing

Apply heat to seal and insulate electrical wiring and connections

3 products

Material Handling

Dock Door Seals

Close the gap between dock doors and trailers to keep heated or cooled air in and dust out

9 products

Dock Door Shelters

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

4 products

Power Transmission

Cylinder Rod Glands

Replace the rod gland on hydraulic cylinders

11 products

Hydraulic Cylinder Seals

Replace seals on the piston or rod end of hydraulic cylinders

9 products

Heating, Ventilation, and Air Conditioning

Pipe Insulation

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

26 products

Fluid Handling

Strainers

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

6 products