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 5855-01-466-1588
NSN 5915-01-247-8991
NSN 5985-01-200-4159
NSN 5945-00-451-5975
NSN 6320-01-420-0340
NSN 5996-01-536-2555
NSN 7035-01-528-2654
NSN 5920-01-124-7200
NSN 6650-01-399-0628
NSN 6135-00-134-6648
NSN 5855-01-503-3452
NSN 5920-00-962-3567