Non-Sagging Sealants | McMaster-Carr

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220 Products

About Sealant Flexibility

Silicone Sealants

Made from silicone, these sealants are RTV (room-temperature vulcanizing).

Silicone Sealants with Material Certification

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

Mildew-Resistant Silicone Sealants

Resistant to mold and mildew, these sealants are well suited to high-humidity environments.

Noncorrosive Silicone Sealants

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

Noncorrosive Silicone Sealants
with Material Certification

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

Low-Outgassing Silicone Sealants

Compliant with ASTM E-595, these sealants produce almost no volatile materials in a vacuum.

Sealants

Optically Clear Sealants

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

Puncture-Resistant Sealants

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

All-Weather Application Sealants

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

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.

Clean Room Sealants

Meeting requirements for semiconductor, biomedical, and electronics clean rooms, these sealants won’t contaminate air and surfaces.

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.

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

With chemical and metal additives that are picked up by X-ray machines and metal detectors, these sealants are designed to help you comply with Hazard Analysis and Critical Control Point (HACCP) programs in food-processing facilities.

Structural Silicone Sealants

Made from silicone, these sealants are RTV (room-temperature vulcanizing). They combine the mechanical strength of an adhesive with excellent sealing properties and high flexibility.

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.

Caulk

Removable Caulk

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

Create-a-Color Caulk

Mix a small amount of water-based paint with this caulk to match the color of your surface.

Caulking Tape

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

Non-Hardening Caulk

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

Oil- and Fuel-Resistant Sealants

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

Oil-Resistant Sealants

Make tough, flexible, oil-resistant seals.

Structural Oil- and Fuel-Resistant Sealants

Impervious to the swelling effects of oil, fuel, and solvents, use these high-strength sealants to assemble and repair fuel systems and tanks.

Chemical-Resistant Sealants

Designed to withstand extreme environments, these fluoroelastomer sealants have excellent resistance to harsh chemicals. They’re non-sagging, so they won't drip from vertical and overhead surfaces.

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.

Acoustical Sealants

Prevent sound from passing through gaps and joints where walls, floors, and ceilings meet using these sealants to fill them.

Vacuum Leak Sealants

Seal leaks on vacuum systems and components.

Concrete Joint Sealants

All-Weather Application Concrete Joint Sealants

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

High-Strength Concrete Joint Sealants

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

Textured Concrete Joint Sealants

$Textured Concrete Joint Sealants$

The textured finish matches concrete surfaces.

Concrete Joint Sealants

Seal joints and gaps in concrete.

High-Temperature Concrete Joint Sealants

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

Glass Sealants

UV-Resistant Glass Sealants

These sealants don't degrade in sunlight.

Glass Sealing Rope

Press this pliable rope into place to hold glass in window frames and seal leaks.

Glass Sealants

Also known as glazing compounds, use these sealants to install glass in aluminum, steel, and wood framing.

Structural Glass Sealants

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

Impact-Resistant Structural Glass Sealants

Repair equipment and vehicle windows with these sealants that are rated to withstand impact within three hours of application.

Roof Joint Sealants

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

All-Weather Application Roof Joint Sealants

Fix roof leaks in cold and wet conditions. These sealants can even be applied underwater.

HVAC Sealants

Form flexible water-resistant seals on metal, plastic, and rubber joints in heating, ventilation, air conditioning, and refrigeration applications.

Metal Duct HVAC Sealants

Seal metal-to-metal joints in ductwork.

Construction Adhesives For Ceiling Tiles

Stick tiles to your ceiling without worrying about them falling off or sagging.