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 5935-01-484-0429
NSN 5930-01-227-6175
NSN 5960-01-035-3901
NSN 5915-00-818-2077
NSN 5985-00-849-6184
NSN 5930-01-340-5413
NSN 5895-01-004-9861
NSN 5905-00-868-4204
NSN 7035-01-102-8111
NSN 5999-00-239-0886
NSN 5925-00-940-3071
NSN 5920-00-644-3285