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 6685-01-149-9196
NSN 6685-00-831-5989
NSN 5835-00-137-2412
NSN 5855-01-205-7030
NSN 5910-00-394-9524
NSN 6685-01-005-6886
NSN 6320-00-468-8421
NSN 5915-01-581-3145
NSN 5975-01-428-9118
NSN 5950-01-448-8876
NSN 5975-01-477-6477
NSN 6320-01-138-0442