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 5915-00-174-7079
NSN 6650-01-443-4053
NSN 6145-00-213-9181
NSN 6650-01-014-5990
NSN 6130-01-010-3254
NSN 5950-01-634-0677
NSN 5920-00-103-7642
NSN 5965-01-076-0071
NSN 5996-01-516-7208
NSN 5975-01-144-9401
NSN 5835-01-652-4959
NSN 5999-01-291-3698