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 5835-01-580-0446
NSN 6130-01-420-7339
NSN 7035-01-241-2127
NSN 6150-01-484-8548
NSN 6150-01-408-7679
NSN 5910-01-463-8455
NSN 6220-01-570-3729
NSN 6130-01-558-7179
NSN 6645-01-180-3818
NSN 6145-01-367-6503
NSN 5910-01-382-8803
NSN 6135-00-010-5275