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 7035-00-585-2113
NSN 5975-01-482-3567
NSN 6130-01-607-8963
NSN 5905-00-959-7149
NSN 6130-00-952-2970
NSN 6685-01-317-9772
NSN 6130-00-919-8505
NSN 5915-00-269-4463
NSN 6135-00-676-5807
NSN 6150-01-442-3719
NSN 5985-01-317-5008
NSN 6650-01-613-1341