Review on Permatex 56521 Performance Thread Sealant by Black Miller

Name: Permatex 56521 Performance Thread Sealant
Item: Permatex 56521 Performance Thread Sealant
Rating: 5

February 09, 2023

Perfect but read the instructions

Well this thing really works BUT. Have it treated according to the instructions. I learned this the hard way by not letting it set and pumping 120psi right after tightening the fitting. I guess I have a tiny leak now that was very difficult to find. Other fittings cured without air pressure are perfectly sealed.

Pros

Price

Cons

Big and bulky

New products

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