Sealant Adhesives | McMaster-Carr

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Calcium Sulfate (Gypsum)

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Parachlorobenzotrifluoride (PCBTF)

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1,187 Products

Sealing

Sealants

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

263 products

Thread Sealants

Create a seal between threaded connections to prevent loosening from vibration

184 products

Sealant Primers

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

9 products

Caulk Guns

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

40 products

Caulk Gun Nozzles

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

12 products

Backer Rods

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

35 products

Gasket Makers

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

60 products

Electrical

Potting Compounds

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

65 products

Fastening and Joining

Threadlockers

Coat threads on threaded fasteners to prevent loosening from impact and vibration

167 products

Retaining Compounds

Fill gaps to bond shafts, bearings, press-fit assemblies, and other cylindrical metal parts

80 products

Facility and Grounds Maintenance

Surface Fillers

Repair chips, cracks, and tears in various surfaces

197 products

Sealant Removers

Clean sealant and caulk off tools and other surfaces

2 products

Measuring and Inspecting

Leak-Detecting Dyes

Bright colors help you spot leaks in water and hydraulic systems without using ultraviolet light

1 product

Containers, Storage, and Furniture

Tank Patches

Spin with a handheld electric router to seal holes in plastic tanks and containers

2 products