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 6220-00-371-7589
NSN 6110-00-141-1966
NSN 7035-01-441-9509
NSN 5835-00-307-3111
NSN 6130-00-010-9394
NSN 5930-01-507-9100
NSN 5975-01-183-5492
NSN 5910-00-296-8816
NSN 6240-00-762-7456
NSN 6135-01-459-0089
NSN 5935-01-346-5512
NSN 5925-00-758-2787