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 6610-00-104-8223
NSN 5895-01-224-5857
NSN 5965-00-762-0630
NSN 6105-00-959-5468
NSN 5998-00-576-4861
NSN 7035-01-418-5499
NSN 5998-01-278-4829
NSN 7035-01-505-0028
NSN 5996-01-580-0582
NSN 5905-01-297-0103
NSN 5855-01-461-0690
NSN 5945-01-525-1017