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 5930-00-008-3092
NSN 5920-00-271-3217
NSN 5945-01-234-4621
NSN 5990-00-226-7894
NSN 5996-01-258-5888
NSN 6110-01-450-3270
NSN 5945-00-926-6295
NSN 5945-01-274-7667
NSN 2925-01-472-4423
NSN 6110-00-797-7559
NSN 5915-01-533-6267
NSN 6240-01-387-4948