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 5960-00-479-1737
NSN 5920-01-536-4689
NSN 6145-00-208-6843
NSN 5935-00-736-4498
NSN 6135-01-633-2066
NSN 5925-01-394-5365
NSN 6110-01-202-5263
NSN 5895-00-222-7752
NSN 5920-01-165-2909
NSN 6130-00-826-8284
NSN 5835-00-337-7801
NSN 6110-01-202-8009