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 6105-01-305-1430
NSN 6135-01-484-8637
NSN 5915-01-528-1312
NSN 5910-01-463-8455
NSN 5895-01-479-3429
NSN 5960-01-222-4199
NSN 5998-01-027-7923
NSN 6685-00-759-4097
NSN 5975-00-583-8625
NSN 6240-00-870-9129
NSN 5855-01-594-7809
NSN 6610-01-424-0283