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 6645-00-230-4396
NSN 5950-00-477-0062
NSN 6320-01-350-5570
NSN 5905-01-033-4855
NSN 6610-00-719-6882
NSN 5965-00-246-5612
NSN 5930-00-568-4019
NSN 5990-01-272-4091
NSN 6130-00-266-7496
NSN 5910-00-780-0977
NSN 5920-01-065-1824
NSN 5915-00-113-4396