Pipe Sealants | McMaster-Carr

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DFARS Specialty Metals

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629 Products

Thread Sealants

Non-Hardening Thread Sealants with PTFE

Slippery to keep threads from binding, and remain pliable enough to self-heal and stop leaks

24 products

Thread Sealants with PTFE

PTFE provides a slippery surface that keeps threads from binding

24 products

Non-Hardening Thread Sealants

Remain pliable enough to self-heal and stop leaks in high-vibration applications

12 products

Thread Sealants

Create a seal between threaded connections to prevent loosening from vibration

12 products

Thread Sealants for Hydraulic and Compressed Air Systems

High lubricity so it's easy to assemble finely threaded components

19 products

High-Temperature Thread Sealants

Withstand temperatures up to 1500° F

7 products

Reusable Non-Hardening Thread Sealants for Coarse Threads

Thicker than sealants for fine threads to bridge gaps between coarse threads

1 product

Non-Hardening High-Temperature Thread Sealants

Remain pliable over time in temperatures up to 1,100° F

5 products

Drip-Free Thread Sealants with PTFE

The stick applies without a mess to keep threads from binding

1 product

Thread Sealants for Oxygen Systems

Chemically inert and completely free of oil so they're safe in wet and dry oxygen systems

2 products

Drip-Free Non-Hardening Thread Sealants with PTFE

Apply without a mess to keep threads from binding and stop leaks in high vibration

3 products

Drip-Free Non-Hardening Thread Sealants

Apply without a mess, and remain pliable enough to self-heal and stop leaks in high vibration

1 product

Reusable Non-Hardening Thread Sealants for Fine Threads

Flow into small spaces between fine threads

1 product

Thread Sealants for Refrigeration Systems

Maintains integrity when exposed to strong chemicals

7 products

Thread Sealant Tape

High-Density Thread Sealant Tape

A higher density than standard tape for a better seal between threads

31 products

Thread Sealant Tape

Made of PTFE so the surface is slippery to keep threads from binding

17 products

Thread Sealant Tape for Stainless Steel Threads

Nickel prevents seizing and galling associated with stainless steel threaded connections

8 products

Choose-a-Color High-Density Thread Sealant Tape

Use color to identify water, gas, chemical, or other connections

7 products

Thread Sealant Tape for Copper, Brass, and Bronze Threads

Contain 10% copper flake to match the color of copper, brass, and bronze threads

2 products

Other Products

Sealants

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

212 products

Threadlockers

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

1 product

Adhesive Cement

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

12 products

Repair and Duct Tape

Permanently join or seal surfaces

33 products

Sealant Primers

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

1 product

Gasket Makers

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

58 products

Gasket Sealants

Seal gaskets on metal parts

11 products

Gasket Tape

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

52 products

Contact Adhesives

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

9 products

Conduit Straights

Join conduit of different sizes and types, or attach conduit to a knockout in electrical boxes

3 products

HVAC Tape

Seal and patch insulation and duct

16 products

Protective Film and Tape

Adhere to surfaces to keep them free of scratches, chemicals, moisture, and germs

3 products

Electrical Tape

Insulate wire and cable splices, wrap wire harnesses, and repair cable jacketing

13 products

Welding Purge Tape

Create dams in pipes before welding, then wash away with water or steam

2 products