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Thread Sealing Compounds

From the most common plumbing thread compounds to the Ultimate in duct tape, PlumbingSupply.com® is your source for Plumber's Goop brand plumbing adhesive/sealant, Super Lube plumbing lubricant, and a great selection of plumbing-related tools, too!

High Quality TU-555 Thread Sealing Compound

T-U Type 555 is a virtually odor free, excellent all purpose, non-seizing thread sealing compound that produces a leak proof seal on all types of metal and plastic threading connections. It is completely homogenized and free of any valve destroying grit. The application may be pressurized immediately after assembly.

Thread Sealing Compound
This top quality thread sealant features:
  • Non-separating and grit free
  • Non-toxic so it's safe to use almost anywhere
  • Adheres even to oily threads (although it is recommended you clean threads before applying for best results)
  • Exceeds federal specs TT-S-1732
  • Brushable from -50°F (-45°C) to +400°F (204°C)
  • Slow dry, soft set, non-hardening, anti-seize formula makes it great for use in situations where you don't want a permanent seal
  • Requirements certified to A.G.A # 4-90 metal threads
  • Proudly made in the USA USA flag button

Easy to use!
Stir the compound well, brush liberally onto the male threads of your fitting, and make up the joint in the normal manner.

Great for many applications - including:
  • Propane & natural gas
  • Mineral oils & lacquers
  • Kerosene & gasoline
  • Nitrogen
  • Brine

  • Ammonia, freons
  • Hydraulic oils
  • Steam
  • Gasses up to 3,000PSI
  • Liquids up to 6,000PSI
Not for use in oxygen lines

TU-555 Thread Sealing Compound

1/4 Pint (4oz.) = $7.08
1/2 Pint (8oz.) = $12.99
1 Pint (16oz.) = $17.88

Order 12, 24 or 48 of the same size item for additional savings!
Pricing discounts will show up in your shopping cart.

- OR - View Cart

To ensure our customers receive fresh products, TU-555 thread sealing compounds are non-returnable.


Great White Basic Pipe Joint Compound

Pipe dope
This pipe compound features:
  • Flexible white, non-separating paste made with PTFE
  • Non-toxic, non-staining formula safe for use almost anywhere
  • Non-hardening, non-seizing compound lubricates and seals all threaded connections - but allows removal of fittings for repair or maintenance if needed
  • Withstands up to 3,000 psi on gases from -50°F to +400°F and up 10,000 psi on liquids from -50°F to +500°F
  • Great for use on water, steam, caustics or dilute acid lines or on PVC, CPVC, ABS, polyethylene, polypropylene, iron, steel, copper, or brass threads
  • Proudly made in the USA USA flag button
Easy to use!
Stir the compound well, brush liberally onto the male threads of your fitting, and make up the joint in the normal manner.

NOT for use on oxygen, fluorine, ketones, or molten metal lines

1oz. basic pipe joint compound = $2.78

- OR - View Cart

Frequently Asked Questions

Q. "Is the TU-555 thread sealing compound compatible with PTFE pipe tape?"
A.Yes. Sometimes adding a good quality thread compound on top of the PTFE thread sealing tape helps seal joints even better. This is often done to natural and propane gas steel pipe and fittings to help make a better thread seal.


Please note: While we strive to ensure every product we label as "Made in the USA" really is 100% made in the USA, it is also important to understand that sometimes manufacturers make changes to their products, or for various reasons may receive components or materials that they would normally purchase domestically from an overseas supplier - and they don't necessarily let distributors (like us!) know that they've changed something about the product or where it is manufactured.

If you receive a product that PlumbingSupply.com® says is "Made in the USA" and the product states it was manufactured elsewhere, please contact us. We will happily replace or refund your purchase to your satisfaction.


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