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 6645-01-166-3788
NSN 5965-00-768-4366
NSN 5935-01-624-1859
NSN 5930-01-288-0727
NSN 6220-01-521-1330
NSN 6320-00-456-2092
NSN 5835-00-025-9951
NSN 5835-01-373-3498
NSN 5935-00-840-3565
NSN 5895-01-449-1371
NSN 6240-01-372-2039
NSN 5935-00-959-4987