Gaskets | McMaster-Carr

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27,541 Products

Most Likely Products

Pipe Gaskets

Form tight seals when connecting flanged pipe fittings

Gasket Material

Gasket Material

Cut custom shapes and sizes to fill gaps between flat surfaces

Edge Seals

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

Tube Fitting Gaskets

Tube Fitting Gaskets

Prevent leaks when connecting sanitary tube fittings

O-Rings

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

10,684 products

Foam

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

Rubber

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

All Results

Sealing

Pipe Gaskets

Form tight seals when connecting flanged pipe fittings

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

Hose Coupling Gaskets

Hose Coupling Gaskets

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

Gasket Tape

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

Hose Washers

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

EMI/RFI Shielding Gaskets

EMI/RFI Shielding Gaskets

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

Made-to-Order Gaskets

Made-to-Order Gaskets

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

Boiler Gaskets

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

Gasket Makers

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

Manway Gaskets

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

Heat Exchanger Gaskets

Heat Exchanger Gaskets

Replace front and rear gaskets in shell and tube heat exchangers

Gauge Glass Gaskets

Gauge Glass Gaskets

Seal the glass on level indicators to monitor liquids without leaks

Gasket Sealants

Gasket Sealants

Seal gaskets on metal parts

Pipe Flashings

Create watertight seals around vent pipes on roofs, even if they expand, contract, and vibrate

Drain Gaskets

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

Edge Seals

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

Rope Seals

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

O-Rings

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

10,684 products

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

O-Ring Bonding Kits

O-Ring Bonding Kits

Everything needed to make O-rings

Shaft Seals

Prevent leaks in motors, pumps, and gearboxes

U-Cup Seals

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

Packing Seals

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

Packing Seal Lubricating Rings

Packing Seal Lubricating Rings

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

Rod Wipers

Scrape dirt off rods to keep the inside of cylinders clean

Piston Seals

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

Rod Seals

Maintain pressure inside cylinders and prevent fluid leaks

Head Seals

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

Buffering Seals

Buffering Seals

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

Shaft Repair Sleeves

Shaft Repair Sleeves

Cover worn shafts with a smooth and protective sealing surface without machining

Spring-Loaded Seals

Spring-Loaded Seals

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

Cushioning Seals

Cushioning Seals

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

Wear Rings

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

Wear Ring Stock

Wear Ring Stock

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

Sealants

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

Sealant Primers

Sealant Primers

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

Raw Materials

Foam

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

Rubber

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

Ceramic

Hard and wear resistant, it also withstands corrosion and high temperatures

Felt

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

Leather

Durable and long lasting; often used for belting, lacing, and sealing applications

Carbon

An electrical conductor that’s often used in electronics and sensors

Mica

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

Gold

Softer than copper and nearly as conductive, form it into electronic components that won't corrode

Platinum

Conductive and formable, it resists extreme heat for use in parts such as thermocouple probes

Building and Machinery Hardware

Grommets

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

Edge Trim

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

Panel Connecting Trim

Panel Connecting Trim

Connect two panels while protecting the edges from damage

T-Slotted Framing and Fittings

T-Slotted Framing and Fittings

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

Strut Channel Framing and Fittings

Strut Channel Framing and Fittings

Secure fittings in the U-shaped channel to route conduit and pipe or build other structures

Weatherstripping

Weatherstripping

Seal gaps around doors, windows, and frames

Thresholds

Transition between flooring surfaces and reduce gaps between doors and floors

Door Drip Guards

Door Drip Guards

Divert rain and snow away from door openings

Vibration-Damping Mounts

Vibration-Damping Mounts

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

Window Film

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

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

Insulating Washers

Insulating Washers

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

Fastener Assortments

Fastener Assortments

Stay prepared by keeping fasteners in common sizes and materials on hand

Adhesives

Bond surfaces together

Tape

Bind, seal, and mark surfaces

Fabricating and Machining

Vacuum Workholding Plate Gasketing

Vacuum Workholding Plate Gasketing

Seal off the in-use areas of vacuum chucks

Fluid Handling

Tube and Tube Fittings

Tube and Tube Fittings

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

Strainers

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

Heating, Ventilation, and Air Conditioning

Pipe Insulation

Pipe Insulation

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

Thermal Insulation Sheets

Thermal Insulation Sheets

Line the walls of furnaces, freezers, ductwork, and buildings to keep heat in or out

Chimney Pipe and Fittings

Chimney Pipe and Fittings

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

Facility and Grounds Maintenance

Toilet Sealing Rings

Toilet Sealing Rings

Prevent leaks where toilets mount to the floor or wall

Toilet Spuds

Connect wall-mount toilets to a flush valve

Toilet Tank-to-Bowl Gaskets

Toilet Tank-to-Bowl Gaskets

Create a tight seal between a toilet tank and bowl

Urinal Sealing Rings

Urinal Sealing Rings

Prevent leaks where urinals mount to the wall

Urinal Spuds

Connect wall-mount urinals to a flush valve

Urinal Flanges

Connect a urinal to your drainage system

Flush Valve Replacement Parts

Flush Valve Replacement Parts

Replace virtually any part in the most common flush valve brands

Power Transmission

Hydraulic Cylinder Seals

Hydraulic Cylinder Seals

Replace seals on the piston or rod end of hydraulic cylinders

Cylinder Rod Glands

Cylinder Rod Glands

Replace the rod gland on hydraulic cylinders

Rod End Seals

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

Electrical

Wire Sleeving

Bundle wiring and protect from abrasion and heat

Heat-Shrink Tubing

Heat-Shrink Tubing

Apply heat to seal and insulate electrical wiring and connections

Material Handling

Dock Door Seals

Dock Door Seals

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

Dock Door Shelters

Dock Door Shelters

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

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