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 5998-01-592-7707
NSN 5996-01-542-9499
NSN 6620-01-020-4526
NSN 5910-01-212-4231
NSN 5950-01-022-3145
NSN 5996-00-781-1429
NSN 6610-00-761-5942
NSN 6130-01-207-4493
NSN 5965-01-354-4387
NSN 7035-01-219-7987
NSN 5960-01-423-4240
NSN 6620-01-538-7174