Tried using that new high-temp thread sealant on a boiler feed line, and it basically turned to dust after a week.

2 comments

2 Comments

Yikes, that's rough. I've had the exact opposite happen, honestly. Used the white Permatex high temp stuff on a steam line years ago and it's still holding. You sure it was rated for the actual service temperature? Some of those "high temp" labels are pretty optimistic.

leem347d ago

That Permatex tube says 650 degrees max.