RTV Seals | McMaster-Carr

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156 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

Oil-Resistant Sealants

Won't degrade from exposure to oil

3 products

Structural Submersible Sealants

The strongest submersible sealants we offer

1 product

Self-Leveling Silicone Rubber Sealants

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

5 products

Silicone Rubber Sealants with Material Certification

Harden at room temperature once applied

9 products

Mildew-Resistant Silicone Rubber Sealants

Resist mold and mildew in high-humidity environments

10 products

Low-Outgassing Silicone Rubber Sealants

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

2 products

Structural Silicone Rubber Sealants

Stronger than standard silicone sealants

4 products

Submersible Sealants

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

2 products

Structural Oil- and Fuel-Resistant Sealants

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

2 products

Oil- and Fuel-Resistant Sealants

Resist swelling when exposed to oil, fuel, and solvents

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

Noncorrosive Silicone Rubber Sealants with Material Certification

Won't discolor copper, brass, or concrete

1 product

Structural Silicone Rubber Sealants with Material Certification

Stronger than standard silicone sealants

2 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

Structural Noncorrosive Silicone Rubber Sealants

Our strongest noncorrosive sealants

3 products

Caulk

Seal and fill cracks and voids

2 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

HVAC Sealants

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

3 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

Other Products

Gasket Makers

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

8 products

Contact Adhesives

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

1 product

Potting Compounds

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

19 products

Sealant Primers

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

9 products