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 5920-00-617-2084
NSN 5855-01-432-2487
NSN 6240-00-905-5680
NSN 5965-00-182-7928
NSN 5905-01-249-2689
NSN 6685-00-740-7256
NSN 6145-01-522-0357
NSN 6105-00-153-0238
NSN 5915-01-050-8214
NSN 5855-01-027-3639
NSN 5835-01-257-5342
NSN 6620-01-417-3314