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 5950-00-290-8090
NSN 4140-01-584-9092
NSN 6105-01-172-2372
NSN 6145-01-168-7756
NSN 5975-00-458-0098
NSN 2925-00-315-8442
NSN 6130-00-288-1886
NSN 6620-00-542-1579
NSN 5905-01-392-2903
NSN 5999-01-176-1244
NSN 6220-01-085-4947
NSN 5999-01-314-4033