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 6610-01-400-3880
NSN 6150-01-653-1438
NSN 6105-01-627-2198
NSN 6610-01-444-4001
NSN 6650-00-328-5632
NSN 5905-00-809-0040
NSN 6685-01-290-3124
NSN 6645-01-545-2954
NSN 2925-01-620-9673
NSN 6685-01-186-9011
NSN 6610-01-180-7558
NSN 5975-01-461-9903