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 6110-01-513-3814
NSN 5925-01-573-7439
NSN 5945-00-794-3810
NSN 5925-01-429-0392
NSN 5895-01-127-1236
NSN 6610-00-261-8159
NSN 5935-00-925-9996
NSN 6105-00-448-0399
NSN 5910-01-394-3729
NSN 5895-00-132-3575
NSN 6130-01-285-0007
NSN 5895-01-179-9693