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 5965-00-581-9978
NSN 6685-01-532-7050
NSN 5975-01-449-1157
NSN 5930-01-525-3973
NSN 6240-01-421-4025
NSN 6130-01-608-4221
NSN 6150-00-167-2272
NSN 6685-01-048-9023
NSN 6110-01-308-4492
NSN 5965-01-426-8325
NSN 5985-01-308-1821
NSN 6320-01-618-7800