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 5835-01-116-2369
NSN 5910-00-192-2342
NSN 5950-01-090-1619
NSN 5985-01-443-5681
NSN 5999-00-236-2566
NSN 5999-01-277-1683
NSN 5999-00-908-4118
NSN 6620-01-026-1776
NSN 6110-01-354-1322
NSN 6220-00-543-4416
NSN 5996-00-679-5233
NSN 5910-01-313-0443