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 5930-01-463-0673
NSN 6320-01-478-9351
NSN 5910-01-109-5802
NSN 5975-01-421-4474
NSN 5915-01-087-6686
NSN 6645-00-357-8827
NSN 6105-01-299-3372
NSN 5915-00-774-3716
NSN 6145-01-432-0899
NSN 6110-01-164-5027
NSN 6220-00-715-0200
NSN 6105-01-462-0140