Copper Gaskets | McMaster-Carr

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185 Products

About Sealant Flexibility

High-Temperature Steam-Resistant
Metallic Pipe Gaskets

Made of 110 copper, these gaskets handle steam applications up to 600° F. They are electrically conductive and resist water, Freon, and fuel oil.

Gasket Maker Sealants

These gasket makers come in a tube.

Gasket Maker Sealants in Cartridges

Use cartridges with a standard caulk gun for quick and easy dispensing.

Gasket Maker Sealant Sticks

All the benefits of a gasket maker in a no-drip form.

Gasket Maker Sealants in Nozzle-Top Cans

Dispense a uniform bead when you press the nozzle.

Flexible Gasket Maker Sealants

These gasket makers come in a tube.

Flexible Gasket Maker Sealants in Nozzle-Top Cans

Dispense a uniform bead when you press the nozzle.

Flexible Gasket Maker Sealants in Cartridges

Use cartridges with a standard caulk gun for quick and easy dispensing.

Fast-Hardening Gasket Maker
Sealants in Nozzle-Top Cans

Dispense a uniform bead when you press the nozzle.

Fast-Hardening Gasket
Maker Sealants in Cartridges

Use cartridges with a standard caulk gun for quick and easy dispensing.

High-Temperature Gasket Maker Sealants

These gasket makers come in a tube.

High-Temperature Gasket
Maker Sealants in Cartridges

Use cartridges with a standard caulk gun for quick and easy dispensing.

High-Temperature Gasket Maker
Sealants in Nozzle-Top Cans

Dispense a uniform bead when you press the nozzle.

Flexible High-Temperature Gasket Maker Sealants

These gasket makers combine the ability to withstand temperatures up to 600° F with the flexibility to accommodate movement.

Extreme-Temperature Gasket
Maker Sealants in Cartridges

Use cartridges with a standard caulk gun for quick and easy dispensing.

Extreme-Temperature Gasket Maker Sealants

These gasket makers come in a can.

Oil-Resistant Gasket Maker Sealants

These gasket makers come in a tube.

Oil-Resistant Gasket Maker Sealants in Cartridges

Use cartridges with a standard caulk gun for quick and easy dispensing.

Oil-Resistant Gasket Maker
Sealants in Nozzle-Top Cans

Dispense a uniform bead when you press the nozzle.

Flexible Oil-Resistant Gasket Maker Sealants

These gasket makers combine oil resistance and the flexibility to accommodate movement.

EMI/RFI-Shielding Gaskets

These gaskets absorb electromagnetic interference (EMI) and radio frequency interference (RFI) to prevent inaccurate signals, flickering displays, and other electrical problems.

Gasketing Adhesives

These adhesives come in a can.

Gasketing Adhesive Sticks

All the benefits of gasketing adhesive in a no-drip form.

Thick High-Temperature Gasketing Adhesives

These adhesives come in a tube.

Thick High-Temperature
Gasketing Adhesives in Cartridges

Use cartridges with a standard caulk gun for quick and easy dispensing.

Gasket Sealants

Gasket Sealants for Flexible Seals

Create flexible seals that never fully harden.

Gasket Sealants for Rigid Seals

Form rigid seals on plumbing connections and duct.

Water-Resistant Gasket Sealants

In or out of water, these sealants maintain their strength.

Sealants

Caulking Tape

Press this adhesive-backed plastic tape into place for an immediate light-duty seal.

Removable Caulk

Make temporary waterproof seals that peel off when no longer needed.

Caulk

Non-Hardening Caulk

Also known as thumb-grade caulk, this forms a non-hardening, moisture-resistant seal that remains pliable.

Optically Clear All-Weather Application Sealants

Clear enough to read through, this UV-resistant sealant allows optimal light transmission for use with solar cells and fiber optics.

All-Weather Application Sealants

Apply these sealants in cold temperatures, on wet surfaces, and even through running water.

Sealants

Puncture-Resistant Sealants

A combination of hardness and surface tension makes these sealants resistant to punctures, cuts, and abrasion.

Optically Clear Sealants

Clear enough to read through, these UV-resistant sealants allow optimal light transmission for use with solar cells and fiber optics.

Noncorrosive Silicone Sealants
with Material Certification

This sealant includes a material certificate with traceable lot number, test report, and product shelf life.

Noncorrosive Silicone Sealants

Also known as neutral-cure sealants, these won't discolor copper, brass, and concrete.

Structural Sealants

These structural sealants combine the mechanical strength of an adhesive with excellent sealing properties and high flexibility.

All-Weather Application Structural Sealants

Apply these sealants in cold temperatures, on wet surfaces, and even through running water.

Structural Silicone Sealants

Structural Silicone Sealants
with Material Certification

These sealants include a material certificate with traceable lot number, test report, and product shelf life.

Structural Noncorrosive Silicone Sealants

Also known as neutral cure, this sealant won't discolor copper, brass, plastic, and concrete.

Oil- and Fuel-Resistant Sealants

These non-sagging sealants will not drip while hardening on vertical and overhead surfaces.

Self-Leveling Oil- and Fuel-Resistant Sealants

Thinner than non-sagging sealants, these flow easily into cracks and have a smooth finish.

Oil-Resistant Sealants

Make tough, flexible, oil-resistant seals.

Chemical-Resistant Sealants

These non-sagging sealants will not drip while hardening on vertical and overhead surfaces.

Self-Leveling Chemical-Resistant Sealants

Thinner than non-sagging sealants, these flow easily into cracks and have a smooth finish.

Submersible Sealants

These sealants are marine grade, so they stand up to water, corrosion from salt spray, mildew, and UV light.

Structural Submersible Sealants

The strongest submersible sealants we offer, these combine the mechanical strength of an adhesive with excellent sealing properties and high flexibility.

Glass Sealants

Structural Glass Sealants

Make seals that support glass under heavy loads in equipment and buildings.

Fire-Rated Glass Sealing Tape

Seal glass windows in metal and wood fire-rated doors.

UV-Resistant Glass Sealants

These sealants don't degrade in sunlight.

Roof Joint Sealants

Self-Leveling Roof Joint Sealants

Thinner than non-sagging sealants, these flow easily into cracks and have a smooth finish.

Roof Joint Sealants

These sealants are non-sagging, so they won't drip from vertical and overhead surfaces.

Concrete Joint Sealants

High-Strength Self-Leveling Concrete Joint Sealants

Thinner than non-sag sealants, these flow easily into cracks and have a smooth finish.

High-Temperature Concrete Joint Sealants

Designed for use on ovens and kilns, these sealants form a durable, rock-hard seal after firing.

High-Strength Concrete Joint Sealants

These non-sagging sealants will not drip while hardening on vertical and overhead surfaces.

Textured Concrete Joint Sealants

The textured finish matches concrete surfaces.

All-Weather Application Concrete Joint Sealants

These non-sagging sealants will not drip while hardening on vertical and overhead surfaces.

Self-Leveling All-Weather
Application Concrete Joint Sealants

Thinner than non-sagging sealants, these flow easily into cracks and have a smooth finish.

Sealant Primers

Prepare joints and surfaces to ensure proper sealant adhesion.

Urethane Structural Adhesives

Urethane adhesives are the most flexible, so they bond dissimilar materials and damp vibration.

About Sealant Flexibility

High-Temperature Steam-Resistant Metallic Pipe Gaskets