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 5915-00-673-7962
NSN 6240-01-198-7929
NSN 6110-01-392-9565
NSN 5999-01-441-1756
NSN 5905-01-122-0152
NSN 5925-00-136-6953
NSN 5965-00-144-2543
NSN 5925-00-312-4426
NSN 5945-01-156-7426
NSN 6145-01-573-1751
NSN 5996-01-212-9866
NSN 5950-00-195-3973