Thread Seals | McMaster-Carr

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EAR99

DFARS Specialty Metals

For Use Outdoors

Minimum Temperature

179 Products

About Sealants

Select a sealant that can stretch, contract, and expand enough for your joints.

Thread Sealants

Thread Sealants with PTFE

PTFE provides a slippery surface that keeps threads from binding

23 products

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 for Hydraulic and Compressed Air Systems

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

17 products

Thread Sealants

Create a seal between threaded connections to prevent loosening from vibration

12 products

Non-Hardening Thread Sealants

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

12 products

Drip-Free Thread Sealants with PTFE

The stick applies without a mess to keep threads from binding

1 product

High-Temperature Thread Sealants

Withstand temperatures up to 1500° F

7 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

Reusable Non-Hardening Thread Sealants for Coarse Threads

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

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

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

1 product

Thread Sealants for Refrigeration Systems

Maintains integrity when exposed to strong chemicals

5 products

Non-Hardening High-Temperature Thread Sealants

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

5 products

Reusable Non-Hardening Thread Sealants for Fine Threads

Flow into small spaces between fine threads

1 product

Thread Sealant Tape

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

17 products

High-Density Thread Sealant Tape

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

31 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 Stainless Steel Threads

Nickel prevents seizing and galling associated with stainless steel threaded connections

8 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