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 6105-01-118-5445
NSN 6610-01-421-4396
NSN 5930-01-417-6602
NSN 5905-00-644-9983
NSN 5965-00-594-3115
NSN 5920-01-084-2508
NSN 6130-00-721-4156
NSN 6645-00-108-6479
NSN 2925-01-265-2853
NSN 6240-01-110-8265
NSN 6320-01-162-5977
NSN 6110-01-502-9212