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 6145-01-611-1074
NSN 5835-01-070-9324
NSN 5920-01-233-8373
NSN 5998-00-969-4793
NSN 6150-00-251-2476
NSN 6620-01-325-4220
NSN 5910-01-189-3122
NSN 6240-01-367-3656
NSN 6150-01-345-9793
NSN 5920-00-185-5801
NSN 6645-01-452-9495
NSN 5835-00-113-6090