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 5945-01-509-3686
NSN 5935-01-206-4727
NSN 5965-01-509-2873
NSN 4140-01-394-4166
NSN 5945-01-485-3959
NSN 2925-01-604-8984
NSN 6620-00-243-7766
NSN 6110-00-419-4475
NSN 2925-01-206-7948
NSN 6620-01-376-3744
NSN 5910-01-385-1774
NSN 5945-01-507-2800