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 5895-00-253-0932
NSN 5855-01-278-8922
NSN 5910-01-494-8386
NSN 5990-01-168-6797
NSN 5835-00-240-9838
NSN 6645-00-464-6375
NSN 5945-01-306-0300
NSN 5895-00-484-4747
NSN 5975-00-780-5123
NSN 4140-01-533-6282
NSN 6240-01-158-6601
NSN 6145-00-027-9852