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 5965-00-831-2134
NSN 6130-01-181-7068
NSN 5945-01-098-0642
NSN 6645-01-108-7904
NSN 6135-00-078-9931
NSN 5835-00-170-5238
NSN 5915-01-386-8114
NSN 6220-01-375-3801
NSN 5895-00-405-4579
NSN 6240-01-652-2821
NSN 6320-01-006-6138
NSN 5920-01-583-9736