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 5895-00-155-8581
NSN 6645-00-888-5820
NSN 5990-00-644-0136
NSN 5855-00-688-9954
NSN 5990-01-240-7288
NSN 2925-01-560-4123
NSN 5990-00-724-4375
NSN 6650-01-633-9147
NSN 5925-01-508-4145
NSN 5915-00-307-6919
NSN 5975-01-414-7816
NSN 5945-01-553-9540