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 6650-00-063-4484
NSN 5960-01-322-1337
NSN 6645-00-372-2618
NSN 5915-00-383-1471
NSN 6145-00-884-8112
NSN 6240-01-437-8991
NSN 2925-00-051-1467
NSN 5960-00-515-7366
NSN 5990-01-147-5225
NSN 5925-01-415-6551
NSN 6650-01-379-0601
NSN 5960-00-235-9251