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 5935-00-274-3100
NSN 6135-01-276-5402
NSN 6320-00-731-6134
NSN 5905-01-474-3672
NSN 5905-01-408-5991
NSN 5855-00-138-2386
NSN 4140-01-146-8274
NSN 6645-01-444-3016
NSN 5960-00-987-1897
NSN 6135-00-816-9052
NSN 6135-00-485-7402
NSN 5930-01-098-9548