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 5998-00-927-2594
NSN 5895-01-263-5693
NSN 6610-01-420-3780
NSN 5925-01-398-5507
NSN 6650-00-434-0188
NSN 6320-01-643-0850
NSN 6145-00-850-7095
NSN 5910-01-249-7427
NSN 6105-01-447-0007
NSN 6685-01-580-9640
NSN 7035-00-205-1932
NSN 5950-01-055-6333