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 5965-01-207-0991
NSN 5915-00-719-6455
NSN 5920-01-437-3521
NSN 5925-01-252-8237
NSN 6650-01-323-5407
NSN 5975-00-776-4604
NSN 6320-01-366-5157
NSN 5915-00-483-6620
NSN 5998-00-255-5867
NSN 5950-01-322-8104
NSN 6320-01-329-8380
NSN 6320-01-271-0247