A relatively thin metallic item, having a concave or cupped contour, designed to effect its own seal by compression against the circumference of a hole. It is used as a blowout plug in boilers, engines, and the like to relieve the pressure created by the expansion of fluids caused by heat or freezing.
Classification: Parts for steam or other vapor generating boilers and super-heated water boilers, except heat exchangers
NSN 5835-01-525-3220
NSN 6110-01-649-6493
NSN 6645-01-409-2003
NSN 5835-00-649-9402
NSN 5998-00-723-7183
NSN 5925-01-265-7749
NSN 6135-00-078-9931
NSN 5910-01-355-2149
NSN 5996-01-128-3080
NSN 5996-00-895-9773
NSN 5998-00-581-3867
NSN 5998-00-405-3392