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 5990-01-333-6583
NSN 5855-00-832-9341
NSN 5855-01-482-8290
NSN 6645-01-349-6632
NSN 6320-00-681-1324
NSN 5835-00-949-3018
NSN 5999-00-269-5320
NSN 6110-01-385-7177
NSN 6650-01-471-2171
NSN 5998-01-314-8339
NSN 5910-01-503-8366
NSN 5895-01-237-3799