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 5950-00-786-1865
NSN 5895-00-269-3848
NSN 5985-01-448-0585
NSN 5895-01-380-4904
NSN 5920-00-011-4512
NSN 5945-00-869-2082
NSN 6685-01-020-2123
NSN 5910-01-112-1249
NSN 5950-00-185-7249
NSN 5920-01-432-1328
NSN 6110-01-031-7185
NSN 6135-01-633-8502