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 5965-00-647-3972
NSN 5935-01-116-2132
NSN 5895-00-391-8084
NSN 4140-00-104-7323
NSN 6135-01-459-6424
NSN 5915-01-142-2018
NSN 5895-00-525-3295
NSN 5925-01-146-0432
NSN 5935-01-281-6168
NSN 6150-01-020-5345
NSN 5990-00-226-7894
NSN 5998-01-184-5131