Caulk | McMaster-Carr

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Mixing Required

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Methyl Isobutyl Ketone (MIBK)

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DFARS Specialty Metals

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587 Products

Sealing

Sealants

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

263 products

Caulk Guns

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

52 products

Sealant Primers

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

9 products

Backer Rods

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

35 products

Thread Sealants

Create a seal between threaded connections to prevent loosening from vibration

184 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

7 products

Facility and Grounds Maintenance

Surface Fillers

Repair chips, cracks, and tears in various surfaces

3 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