Caulk | McMaster-Carr

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Methyl Isobutyl Ketone (MIBK)

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DFARS Specialty Metals

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568 Products

Sealing

Sealants

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

247 products

Caulk Guns

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

52 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

Thread Sealants

Create a seal between threaded connections to prevent loosening from vibration

179 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

Fastening and Joining

Adhesives

Bond surfaces together

6 products

Cartridge Sealing Caps

Slip over the tips of adhesive and sealant cartridges to keep contents from hardening

1 product

Tube Dispensers

Squeeze all the contents out of tubes

2 products

Safety Equipment

Fire Stops

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

8 products

Facility and Grounds Maintenance

Surface Fillers

Repair chips, cracks, and tears in various surfaces

4 products

Sealant Removers

Clean sealant and caulk off tools and other surfaces

2 products

Fabricating and Machining

Casting Metals

Melt and pour into molds to make metal parts and prototypes

1 product