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 5999-00-734-4686
NSN 6620-01-173-3284
NSN 6320-01-207-0636
NSN 6645-01-076-4655
NSN 7035-01-363-4540
NSN 5935-01-410-7823
NSN 5960-01-481-3722
NSN 6145-00-722-9700
NSN 6150-01-617-6143
NSN 6110-00-549-6662
NSN 6150-01-400-4211
NSN 5945-01-222-0202