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 5835-00-312-8596
NSN 5998-01-005-4226
NSN 5935-00-726-4704
NSN 6240-00-586-6428
NSN 7035-00-941-4949
NSN 6645-01-116-3423
NSN 5915-01-329-4306
NSN 6130-00-193-7223
NSN 5910-01-526-4474
NSN 6645-01-014-9205
NSN 5930-01-242-8845
NSN 5960-01-194-4506