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 5950-00-000-0146
NSN 5920-01-602-5109
NSN 6150-01-187-4659
NSN 5975-01-601-8064
NSN 5905-01-105-5232
NSN 6145-01-412-0177
NSN 5975-01-487-4379
NSN 6110-01-553-8608
NSN 6220-01-391-7705
NSN 5895-01-012-1920
NSN 5950-01-147-5419
NSN 6645-01-243-3138