Seam Sealers | McMaster-Carr

Filter by

For Use On

3D Printer Extruder Heating Elements

Bricks

Electrical Components

Grout

Hard-to-Bond Materials

Color

For Joining

Maximum Temperature

Container Size

Manufacturer

Type

Manufacturer Model Number

Formulation

Calcium Sulfate (Gypsum)

Methyl Isobutyl Ketone (MIBK)

Material

Calcium Sulfate (Gypsum)

For Use Outdoors

Begins to Harden

Mixing Required

For Use With

Consistency

Environment

Minimum Temperature

Reaches Full Strength

RoHS

Compliant

Compliant with Exemptions

REACH

Performance

Electrically Insulating

EMI Shielding

Expandable

Fast Harden

Export Control Classification Number (ECCN)

1A995

1C995

EAR99

U.S.–Mexico–Canada Agreement (USMCA) Qualifying

Yes

DFARS Specialty Metals

Clarity

2,254 Products

Sealing

Sealants

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

262 products

Caulk Guns

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

62 products

Caulk Gun Nozzles

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

12 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

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

58 products

Gasket Tape

Seal openings such as those around windows, enclosures, and pipe flanges to prevent leaks

94 products

Gasket Sealants

Seal gaskets on metal parts

11 products

Fastening and Joining

Structural Adhesives

Strong enough to replace screws and rivets for many jobs

165 products

Cartridge Sealing Caps

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

1 product

Adhesive Dispensing Gun Nozzles

Pair with cartridges in dispensing guns to control the flow of adhesive

75 products

Adhesive Dispensing Gun Cartridges

Fill and then mount in dispensing guns to apply adhesives to surfaces

34 products

Glue Guns

Melt and dispense hot-melt glue

19 products

Tube Dispensers

Squeeze all the contents out of tubes

2 products

Instant-Bond Adhesives

Also known as super glue, these adhesives create strong bonds in under 90 seconds

162 products

Contact Adhesives

Apply adhesive, air dry, and bring surfaces together to bond

52 products

Adhesive Cement

Form strong bonds on plastic, rubber, ceramic, and other materials

25 products

Adhesive Accelerators

Speed up the time it takes adhesives to reach full strength

12 products

Threadlockers

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

166 products

Adhesive Primers

Prepare surfaces before adding adhesives to improve bonding strength

19 products

Adhesive and Sealant Assortments

A collection of adhesives for routine maintenance and quick repairs

1 product

Retaining Compounds

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

80 products

Mounting Adhesives

Mount objects with a range of adhesives, including glue-on-a-roll and glue shapes

3 products

Construction Adhesives

Join a wide range of construction materials, from drywall to carpeting

17 products

Glue

The first choice for everyday bonding and repairs

15 products

Hot Glue

Melt for rapid bonds in a range of applications, from packaging to woodworking

17 products

Anchoring Adhesives

Permanently set threaded rods, studs, and rebar in concrete

18 products

Repair and Duct Tape

Permanently join or seal surfaces

39 products

Mounting Tape

Mount everything from signs and panels to carpet and padding

26 products

Masking Tape

Temporarily join or protect surfaces

3 products

Weld-Backing Tape

Stick to the back of welding seams to contain spatter and prevent gases from weakening the weld

11 products

Magnet-Receptive Sheets

Cut with scissors to form custom nonmetallic, nonmagnetic surfaces that magnets will stick to

3 products

Solder Mask

Temporarily shield circuit boards from solder, flux, and high temperatures

4 products

Facility and Grounds Maintenance

Surface Fillers

Repair chips, cracks, and tears in various surfaces

116 products

Protective Coatings

Shield surfaces from the surrounding environment

155 products

Touch-Up Paint Pens

Cover scratches in paint and coatings

1 product

Wood Stains

Refresh and protect the appearance of wood surfaces by staining and sealing them

1 product

Leather Lubricants

Extend the life of leather; also known as castor oil

2 products

Fabric Coatings

Preserve the appearance of fabric by blocking liquids and UV rays

4 products

Leather Conditioners

Recondition, waterproof, and preserve leather; also known as neatsfoot oil

2 products

Protective Coating Primers

Prepare metal surfaces for powder coating

2 products

Seam Rollers

Press down the seams where wall coverings meet for a smooth, continuous appearance

7 products

Drywall Tape

Apply to seams and corners before spreading drywall compound for a finished appearance

3 products

Sealant Removers

Clean sealant and caulk off tools and other surfaces

2 products

Roof Coatings

Form a water-resistant layer to restore and reinforce your roof

10 products

Roof Brushes

Apply thick roof coatings and patches

1 product

Plumber's Putty

Mold into a watertight, removable seal around faucets and drains

3 products

Fabricating and Machining

Zinc-Plating Kits

Create your own zinc-plating system to add corrosion resistance to steel and iron parts

3 products

Anodizing Kits

Coat aluminum parts for added resistance to corrosion and chemicals

5 products

Blackener Kits

Create a flat, black protective finish on metal tools to resist corrosion and reduce glare

13 products

Casting Metals

Melt and pour into molds to make metal parts and prototypes

19 products

Polish

Clean, shine, and protect hard surfaces

2 products

Electrical Power, Networking, and Controlling

Potting Compounds

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

82 products

Electrically Insulating Adhesives

Secure hardware on circuit boards while insulating current

12 products

Conformal Coatings

Secure and insulate components on circuit boards and other electronics

31 products

Thermal Control Coatings

Give off almost no volatile emissions that could damage sensitive electronics and optics

1 product

Fluid Handling

Thermal Paste

Mold heat cable to pipe, eliminating air gaps that lead to heat loss and heater failure

18 products

Material Handling

Inner Tubes

Pair with a matching tire for a smooth ride

14 products

Tire Sealants

Prevent tire punctures or plug them on the spot

6 products

Containers, Storage, and Furniture

Tank Patches

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

4 products

Heating, Ventilation, and Air Conditioning

Foam Insulation Coatings

Shield foam pipe insulation from moisture, UV rays, and ozone

1 product

Spray Foam Insulation

Expands to fill in cracks, gaps, and other hollow spaces for a tight seal against drafts and heat

3 products

Safety Equipment

Fire Stops

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

59 products

Drum Patches

Patch drum leaks to prevent their contents from spilling

2 products

Protective Clothing Tape

Patch rips and seal gloves, boots, and respirators to clothing

1 product