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 6320-00-977-3930
NSN 5990-00-328-4490
NSN 5935-01-477-2536
NSN 5945-01-392-0898
NSN 6220-01-359-7820
NSN 5835-01-324-8739
NSN 6645-00-079-4087
NSN 5910-01-261-2226
NSN 6645-01-130-9393
NSN 5975-01-274-7486
NSN 2925-01-034-3774
NSN 6220-00-409-9500