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 5998-00-466-3142
NSN 5930-01-005-6795
NSN 5930-00-345-7858
NSN 6620-01-476-0498
NSN 5950-01-062-0877
NSN 6610-00-456-0485
NSN 5910-00-559-1138
NSN 6110-01-261-1560
NSN 5910-01-443-1968
NSN 7035-00-150-2379
NSN 5945-01-314-5432
NSN 6645-01-290-1448