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 5996-00-973-3604
NSN 6110-01-287-8438
NSN 6145-01-308-1042
NSN 5915-01-487-6454
NSN 5855-01-541-5569
NSN 6145-00-937-3536
NSN 6620-00-067-4946
NSN 5975-01-233-0684
NSN 6145-01-594-2389
NSN 5855-01-083-1027
NSN 5855-01-331-8502
NSN 5935-01-451-9588