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 5910-00-052-6550
NSN 6145-00-764-4338
NSN 6685-00-404-5962
NSN 5925-01-519-9251
NSN 6145-01-260-3590
NSN 5855-01-297-1886
NSN 6130-00-361-7114
NSN 5945-00-184-7654
NSN 5990-01-647-8574
NSN 5950-01-299-5122
NSN 5996-01-442-8751
NSN 5945-01-066-0710