Caulk Sealants | McMaster-Carr

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Mixing Required

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Methyl Isobutyl Ketone (MIBK)

Parachlorobenzotrifluoride (PCBTF)

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DFARS Specialty Metals

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EAR99

Food Industry Standard

584 Products

Sealing

Sealants

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

244 products

Caulk Gun Nozzles

Attach to caulk guns to change the shape and amount of sealant that's dispensed

12 products

Caulk Guns

Cartridge, sausage-pack, and bulk-load caulk guns

40 products

Thread Sealants

Create a seal between threaded connections to prevent loosening from vibration

181 products

Backer Rods

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

35 products

Sealant Primers

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

9 products

Caulk Gun Sleeves

Insulate your caulk gun so contents remain easy to dispense, even in cold weather

1 product

Backer Rod Insertion Tools

Quickly set foam backer rods in caulk joints at a consistent depth without puncturing them

2 products

Gasket Makers

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

2 products

Fastening and Joining

Adhesives

Bond surfaces together

8 products

Fabricating and Machining

Casting Metals

Melt and pour into molds to make metal parts and prototypes

1 product

Raw Materials

Lead

A dense insulator often used to shield against radiation and absorb sound and vibration

2 products

Electrical

Potting Compounds

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

22 products

Facility and Grounds Maintenance

Sealant Removers

Clean sealant and caulk off tools and other surfaces

1 product