|Posted by nicktheplumber on December 31, 2003 at 19:39:17:|
|In response to Re: natural gas black pipe unions|
: does one use thread sealant on the face of a union / the large threading nut? I know the two small pieces that thread onto both ends of the black pipe obviously do receive thread sealant.
The machined mating surfaces of unions, no matter what fluids these unions are used for, should NOT be coated with any type of sealant.
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