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 6220-01-451-7083
NSN 5935-01-592-5636
NSN 5985-01-381-2563
NSN 5925-01-647-8302
NSN 5950-00-557-3770
NSN 2925-00-295-1994
NSN 6145-01-412-0926
NSN 5960-01-359-6630
NSN 5996-01-512-9275
NSN 6645-01-468-4990
NSN 7035-01-319-7066
NSN 5835-00-351-9459