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 5950-00-159-6777
NSN 5990-01-395-4194
NSN 6685-01-309-8360
NSN 5999-01-106-0502
NSN 6150-01-118-7680
NSN 5895-01-027-0500
NSN 6150-01-394-5915
NSN 7035-00-205-1932
NSN 6685-01-321-6894
NSN 5895-00-822-9749
NSN 5930-01-454-0376
NSN 5950-01-235-1249