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 5920-00-288-5849
NSN 5999-01-261-0914
NSN 5855-00-446-5921
NSN 5920-00-915-3571
NSN 5999-01-429-1238
NSN 6145-01-634-0388
NSN 6110-01-444-4288
NSN 5998-00-373-7728
NSN 5996-00-941-2885
NSN 6145-00-222-1356
NSN 5905-01-279-4066
NSN 5945-00-987-8435