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 5835-00-155-1379
NSN 6145-00-351-4539
NSN 5990-01-208-4322
NSN 5910-01-462-5079
NSN 5910-00-528-4311
NSN 5990-00-478-6518
NSN 5915-00-905-1590
NSN 5965-01-444-3098
NSN 5855-01-518-8691
NSN 5965-01-615-6592
NSN 5920-01-599-0515
NSN 6650-01-248-9081