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 5855-00-361-0167
NSN 5965-00-594-3115
NSN 6620-01-413-9243
NSN 5910-01-219-1267
NSN 6135-01-242-2304
NSN 6620-00-041-0984
NSN 6105-01-423-8242
NSN 5985-00-189-2396
NSN 6135-01-226-4071
NSN 6610-00-433-2480
NSN 6220-01-033-2082
NSN 6135-00-635-9187