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 6105-01-497-7307
NSN 5915-01-137-3709
NSN 6620-01-352-5640
NSN 6645-01-418-8304
NSN 6130-00-564-1230
NSN 6645-00-258-8547
NSN 5925-01-422-3664
NSN 5905-00-753-0299
NSN 5950-01-207-8961
NSN 5905-01-366-8121
NSN 6150-01-285-1473
NSN 6240-01-272-9019