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 5960-01-495-0859
NSN 5910-01-343-0040
NSN 6135-01-572-7548
NSN 5975-00-113-7312
NSN 5905-01-485-0234
NSN 5835-01-492-4318
NSN 6150-01-291-3145
NSN 6610-01-335-3185
NSN 6105-00-615-9979
NSN 5920-01-072-9158
NSN 6220-00-527-1177
NSN 5910-00-922-7222