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 5950-01-462-1626
NSN 6610-01-559-5073
NSN 6150-01-486-0816
NSN 5925-00-499-9220
NSN 5920-01-212-9908
NSN 6150-01-450-9995
NSN 5895-01-554-8489
NSN 6220-01-526-5854
NSN 6110-01-048-7725
NSN 6645-01-384-7791
NSN 6645-01-629-0847
NSN 5990-01-501-5409