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 5930-01-448-9391
NSN 5915-00-064-5666
NSN 5920-00-499-8285
NSN 5835-00-233-6327
NSN 6610-01-195-3497
NSN 5965-01-461-4480
NSN 5835-01-632-6627
NSN 5935-00-264-4149
NSN 6650-01-496-8962
NSN 6110-00-340-3280
NSN 6150-01-341-5359
NSN 5996-01-157-7728