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 6645-01-408-6568
NSN 5998-00-550-1870
NSN 6135-00-271-0407
NSN 5910-01-640-6820
NSN 5999-01-121-1194
NSN 6220-00-403-3444
NSN 5945-01-296-7606
NSN 5975-00-566-4232
NSN 6685-01-112-5746
NSN 7035-01-064-8212
NSN 5999-01-401-5322
NSN 5935-00-004-1966