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 5925-00-067-3814
NSN 5950-00-127-6514
NSN 5965-01-392-9343
NSN 5855-01-483-2346
NSN 2925-01-262-1418
NSN 6110-01-449-0150
NSN 4140-00-150-8265
NSN 5960-01-309-5933
NSN 5996-01-268-1625
NSN 5910-01-447-3319
NSN 5835-00-113-6090
NSN 6220-01-221-9429