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 5960-01-495-0859
NSN 5996-01-224-7914
NSN 6240-01-537-1832
NSN 5985-01-357-7787
NSN 5985-01-043-0141
NSN 5999-01-481-3850
NSN 6645-01-462-2101
NSN 6110-01-430-3684
NSN 6240-01-052-2488
NSN 5905-00-497-6323
NSN 6145-00-493-4073
NSN 5996-01-358-8671