High-Temperature Seals | McMaster-Carr

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13,155 Products

Sealing

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

Gasket Material

Gasket Material

Cut custom shapes and sizes to fill gaps between flat surfaces

Pipe Gaskets

Form tight seals when connecting flanged pipe fittings

Gasket Tape

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

Gasket Sealants

Gasket Sealants

Seal gaskets on metal parts

Gasket Makers

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

Tube Fitting Gaskets

Tube Fitting Gaskets

Prevent leaks when connecting sanitary tube fittings

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

Pipe Flashings

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

Manway Gaskets

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

O-Rings

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

Backup Rings

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

O-Ring Cord Stock

O-Ring Cord Stock

Cut to length to create customized seals

Packing Seals

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

Shaft Seals

Prevent leaks in motors, pumps, and gearboxes

Spring-Loaded Seals

Spring-Loaded Seals

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

Rod Wipers

Scrape dirt off rods to keep the inside of cylinders clean

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

Wear Rings

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

Sealants

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

Thread Sealants

Thread Sealants

Create a seal between threaded connections to prevent loosening from vibration

Backer Rods

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

Fabric

Use to cover, clean, and insulate objects

Mica

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

Felt

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

Building and Machinery Hardware

Edge Trim

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

Grommets

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

Bumpers

Absorb impact to protect equipment and surfaces from dents and scuffs

Protective Plugs

Protective Plugs

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

Protective Caps

Protective Caps

Cover holes at the end of pipe, conduit, and fittings to keep out debris

Fastening and Joining

Tape

Bind, seal, and mark surfaces

Sealing Washers

Sealing Washers

Prevent fluids from leaking around fasteners

Adhesives

Bond surfaces together

Threadlockers

Coat threads on threaded fasteners to prevent loosening from impact and vibration

Glue Guns

Melt and dispense hot-melt glue

Weld-Backing Tape

Weld-Backing Tape

Stick to the back of welding seams to contain spatter and prevent gases from weakening the weld

Containers, Storage, and Furniture

Heat Sealers

Seal bags, packages, and film using heat

Open-Top Bags

Close around material with a staple, twist tie, or heat sealer

Vacuum Sealers

Create an airtight seal around small parts to prevent damage from moisture and oxidation

Material Handling

Conveyor Brushes

Conveyor Brushes

Position items on conveyor belts and wipe off debris

Heat-Shrink Wrap

Heat-Shrink Wrap

Create a form-fitting barrier around packages to protect them from moisture and dirt

Electrical

Heat-Shrink Tubing

Heat-Shrink Tubing

Apply heat to seal and insulate electrical wiring and connections

Wire Sleeving

Bundle wiring and protect from abrasion and heat

Solder Mask

Temporarily shield circuit boards from solder, flux, and high temperatures

Potting Compounds

Potting Compounds

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

Conformal Coatings

Conformal Coatings

Secure and insulate components on circuit boards and other electronics

Thermal Interface Material

Thermal Interface Material

Dissipate heat away from electronic components

Heating, Ventilation, and Air Conditioning

Pipe Insulation

Pipe Insulation

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

Insulation Fill

Insulation Fill

Blow into walls to fill gaps in existing insulation, or mix as a filler in insulating cement

Fluid Handling

Thermal Paste

Mold heat cable to pipe, eliminating air gaps that lead to heat loss and heater failure

Tube and Tube Fittings

Tube and Tube Fittings

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

Facility and Grounds Maintenance

Surface Fillers

Surface Fillers

Repair chips, cracks, and tears in various surfaces

Paint

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

Protective Coatings

Protective Coatings

Shield surfaces from the surrounding environment

Fabricating and Machining

Blackener Kits

Create a flat, black protective finish on metal tools to resist corrosion and reduce glare

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