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 5945-01-017-1394
NSN 6620-01-605-1465
NSN 6135-01-026-9960
NSN 5835-01-274-1035
NSN 6150-01-056-6112
NSN 7035-01-287-9817
NSN 6135-01-026-9960
NSN 5905-01-173-2794
NSN 5996-01-488-4976
NSN 6130-00-249-1181
NSN 6645-01-163-8002
NSN 5895-01-328-8707