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 5985-01-558-3815
NSN 5990-00-206-3753
NSN 5945-00-526-0310
NSN 5925-01-476-2798
NSN 5945-00-419-7601
NSN 7035-01-658-1623
NSN 5975-01-229-8786
NSN 6620-01-193-8963
NSN 6110-01-145-8113
NSN 5895-01-527-1134
NSN 5990-00-283-1324
NSN 5998-01-130-5621