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 5945-00-972-5378
NSN 5965-01-422-1392
NSN 5855-01-400-1590
NSN 5920-00-998-2892
NSN 5996-01-576-4148
NSN 6150-01-463-9300
NSN 6240-01-509-9606
NSN 5998-00-292-9515
NSN 5920-01-212-1536
NSN 5910-00-170-6784
NSN 6110-01-233-3500
NSN 7035-01-211-5636