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 6110-01-195-0186
NSN 5855-00-247-7219
NSN 5905-00-329-9583
NSN 5905-00-999-2677
NSN 5999-00-639-3447
NSN 6685-00-287-7564
NSN 6610-01-391-5092
NSN 5950-00-542-0627
NSN 5998-00-651-6212
NSN 6645-01-277-5973
NSN 6220-01-425-1588
NSN 4140-01-534-3756