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 5915-00-963-6049
NSN 5915-01-512-8026
NSN 5930-00-085-0811
NSN 6645-01-618-1983
NSN 6110-00-161-0132
NSN 5965-01-424-1096
NSN 5930-01-572-1029
NSN 5910-01-351-5679
NSN 5998-00-463-4463
NSN 5915-01-042-5619
NSN 6610-01-612-4611
NSN 5925-01-322-3882