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 6105-00-723-2035
NSN 6610-01-364-8295
NSN 5930-01-299-7680
NSN 5930-00-261-6522
NSN 5985-01-398-1064
NSN 6685-00-684-7891
NSN 6650-01-121-6904
NSN 6650-00-949-8653
NSN 5950-00-999-0710
NSN 5975-01-479-5281
NSN 5905-01-139-6414
NSN 5855-00-014-5008