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 5945-00-423-6005
NSN 5935-01-515-9309
NSN 5910-00-140-0564
NSN 5945-00-405-1248
NSN 6320-01-342-7548
NSN 5990-01-088-5293
NSN 6645-00-486-8649
NSN 5985-01-552-2384
NSN 6620-00-378-3070
NSN 6130-01-236-2348
NSN 5975-01-025-1613
NSN 6650-01-275-8565