PST thread sealant

[KSMITH1@mailgw.sanders.lockheed.com]

Hi listers:

Just to throw my two scents into the fray:  It is my understanding the 
the Permatex/Loctite PST is mainly a combination of a 
methylmethacrylate adhesive, similar to the others used in Loctite, 
and powdered teflon.  On the large pipes this compound is used on in 
industrial settings, red, or even blue Loctite whould lead to an 
improbable future repair dissasembly effort.  With the teflon, the 
gaps and defects in the typical pipe thread mating surfaces are 
filled, and the methylmethacrylate provides adequate locking, _after a 
setting period_.  Normal metal-to-metal contact provides the principal 
locking torque; the adhesive resists vibration and keeps the teflon in 
place.  I use it on threaded metal pipes.  (Use teflon tape on PVC.)

***                 ...Kirby    (Kirby A. Smith)                 ***
***              ksmith1@mailgw.sanders.lockheed.com             ***
***              [=]   kirby.a.smith@lmco.com                    ***
***  Opinions expressed herein are entirely those of the author. ***