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 6135-01-205-5965
NSN 5999-01-139-5204
NSN 5990-01-272-4091
NSN 6105-01-395-6658
NSN 5960-01-237-2336
NSN 5855-01-382-8725
NSN 6320-01-281-6028
NSN 6105-00-196-4957
NSN 6220-01-154-8368
NSN 6610-01-526-2054
NSN 6105-00-902-4523
NSN 6240-00-896-6334