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 5855-01-383-8339
NSN 5925-01-017-7270
NSN 5985-01-287-8500
NSN 6645-00-674-9728
NSN 6645-01-358-7485
NSN 6320-00-593-0379
NSN 6220-00-939-1429
NSN 6610-01-535-0310
NSN 7035-01-181-2705
NSN 5835-01-376-8454
NSN 6110-01-419-1873
NSN 5910-01-034-9282