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 5930-01-056-5276
NSN 5835-00-604-2026
NSN 5930-00-113-4483
NSN 5975-01-374-0829
NSN 5975-00-925-1197
NSN 5999-00-807-1435
NSN 5999-01-393-2008
NSN 6320-01-233-5798
NSN 6610-01-386-0647
NSN 6685-00-186-9190
NSN 6105-01-158-2735
NSN 5985-01-542-5925