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 6240-01-117-1934
NSN 6240-01-522-9383
NSN 6150-01-061-1240
NSN 6645-01-443-4854
NSN 5945-00-415-0324
NSN 6610-00-832-3134
NSN 5910-01-346-3440
NSN 6320-01-138-0442
NSN 2925-01-043-9786
NSN 5935-01-240-2988
NSN 5855-01-105-7793
NSN 6105-01-219-5226