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 5935-00-161-3429
NSN 5990-00-010-1413
NSN 6105-01-476-8040
NSN 6105-00-866-2740
NSN 6645-01-605-4351
NSN 5895-00-070-4533
NSN 6645-00-248-4925
NSN 5935-00-008-6827
NSN 5895-01-369-5611
NSN 5930-00-816-9780
NSN 6110-01-458-7843
NSN 6150-01-426-0112