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 6150-00-339-1336
NSN 6645-01-571-6404
NSN 6610-01-555-8364
NSN 5910-00-798-5754
NSN 4140-01-020-9926
NSN 5855-00-466-2309
NSN 5905-01-145-5434
NSN 5985-01-156-3892
NSN 6610-01-457-1974
NSN 6150-00-058-8669
NSN 5910-01-311-0586
NSN 5920-01-398-7123