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 5996-01-476-7550
NSN 5920-01-584-9617
NSN 6110-01-125-6654
NSN 5965-01-540-6843
NSN 5945-01-134-3941
NSN 5999-01-444-0251
NSN 6105-00-166-6845
NSN 5975-01-562-9519
NSN 6685-01-261-2359
NSN 6105-00-876-8057
NSN 6130-01-578-0889
NSN 5975-01-296-0124