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 6150-00-058-8669
NSN 6130-01-415-2870
NSN 5895-01-551-3181
NSN 5915-01-593-8937
NSN 5998-01-408-1045
NSN 6685-01-607-4308
NSN 5990-00-016-5648
NSN 6145-01-568-6977
NSN 5930-01-480-4323
NSN 5975-00-369-4999
NSN 5910-01-438-4952
NSN 5905-01-445-5572