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 5855-00-337-3679
NSN 5925-01-461-2756
NSN 6110-01-264-9933
NSN 6650-01-271-8239
NSN 7035-01-287-9817
NSN 2925-01-483-9147
NSN 6645-01-430-4125
NSN 5996-00-739-2315
NSN 6320-01-407-8663
NSN 5855-01-053-0679
NSN 6650-01-363-9608
NSN 5920-01-201-2252