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 5905-01-441-7529
NSN 5930-01-494-0086
NSN 5985-01-246-2877
NSN 5950-01-105-8414
NSN 6240-01-197-0489
NSN 6685-00-269-6444
NSN 5915-00-411-8944
NSN 5835-01-157-5886
NSN 5975-01-473-5843
NSN 6610-00-175-7250
NSN 5855-01-010-4921
NSN 6320-01-132-2746