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 5945-01-252-8662
NSN 6145-01-124-6688
NSN 5910-00-199-8460
NSN 5999-00-515-7354
NSN 5950-01-470-6607
NSN 5985-01-534-7913
NSN 6110-01-514-0271
NSN 5999-00-735-0727
NSN 5985-01-144-4864
NSN 5935-01-059-4331
NSN 5950-01-292-2687
NSN 6110-01-326-7370