Silicone Caulk | McMaster-Carr

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Export Control Classification Number (ECCN)

EAR99

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

Yes

DFARS Specialty Metals

Exempt

Primer Required for Use On

138 Products

Sealants

Silicone Rubber Sealants

Harden at room temperature once applied

44 products

Noncorrosive Silicone Rubber Sealants

Won't discolor copper, brass, or concrete

13 products

Mildew-Resistant Silicone Rubber Sealants

Resist mold and mildew in high-humidity environments

10 products

All-Weather Application Structural Sealants

The strongest all-weather sealants we offer

6 products

Caulk

Seal and fill cracks and voids

2 products

Silicone Rubber Sealants with Material Certification

Harden at room temperature once applied

9 products

Low-Outgassing Silicone Rubber Sealants

Release almost no volatile emissions that could damage sensitive electronics, even in a vacuum

2 products

Self-Leveling Silicone Rubber Sealants

Thinner than non-sagging silicone sealants to flow easily into cracks for a smooth finish

5 products

Submersible Sealants

Stand up to water, salt spray, mildew, and UV light

2 products

Oil-Resistant Sealants

Won't degrade from exposure to oil

3 products

Metal- and X-Ray-Detectable Structural Noncorrosive Silicone Rubber Sealants

Locate a piece if it falls in your food line using metal detectors and X-ray machines

1 product

Puncture-Resistant Sealants

Resist punctures, cuts, and abrasion from heavy wear and tampering

4 products

Structural Oil- and Fuel-Resistant Sealants

Our strongest oil- and fuel-resistant sealants for assembling and repairing fuel systems and tanks

2 products

Self-Leveling Silicone Rubber Sealants with Material Certification

Thinner than non-sagging silicone sealants to flow easily into cracks for a smooth finish

1 product

Structural Noncorrosive Silicone Rubber Sealants

Our strongest noncorrosive sealants

3 products

Noncorrosive Silicone Rubber Sealants with Material Certification

Won't discolor copper, brass, or concrete

1 product

Structural Silicone Rubber Sealants

Stronger than standard silicone sealants

4 products

Structural Silicone Rubber Sealants with Material Certification

Stronger than standard silicone sealants

2 products

Oil- and Fuel-Resistant Sealants

Resist swelling when exposed to oil, fuel, and solvents

2 products

HVAC Sealants

Form water-resistant seals on metal, plastic, and rubber joints in HVAC applications

3 products

Glass Sealants

UV-Resistant Glass Sealants

Won't degrade in sunlight

4 products

Structural Glass Sealants

Support glass under heavy loads in equipment and buildings

2 products

Concrete Joint Sealants

High-Strength Concrete Joint Sealants

Stand up to heavy wear and tear, such as steel wheel traffic

7 products

High-Strength Self-Leveling Concrete Joint Sealants

Flow easily into cracks for a smooth finish and withstand wear and tear in high-traffic areas

2 products

Roof Joint Sealants

Seal roof joints to keep out the elements

1 product

Other Products

Construction Adhesives

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

1 product

Fire Stops

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

3 products

Sealant Primers

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

2 products

Repair and Duct Tape

Permanently join or seal surfaces

2 products