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 5975-01-136-4988
NSN 5925-00-387-3956
NSN 6105-01-213-6224
NSN 5935-01-367-6671
NSN 7035-00-286-6221
NSN 5935-01-394-6053
NSN 6105-01-383-6534
NSN 5915-01-657-4723
NSN 6685-00-281-2840
NSN 5835-01-434-0790
NSN 6105-01-432-1342
NSN 6645-01-067-4393