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 6610-01-536-4056
NSN 5975-00-556-9106
NSN 5930-00-823-5956
NSN 6110-01-167-1822
NSN 5930-01-554-0907
NSN 5950-01-082-7801
NSN 5998-01-439-7177
NSN 5915-00-233-9284
NSN 6220-01-283-8761
NSN 5920-00-985-5090
NSN 6320-00-004-9158
NSN 5925-00-246-0582