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 6320-00-779-5923
NSN 6110-01-080-6198
NSN 5935-00-230-0330
NSN 6620-01-017-4790
NSN 5935-01-074-3902
NSN 6610-01-141-7014
NSN 6220-00-177-3086
NSN 6645-01-160-7707
NSN 5915-01-381-1255
NSN 5835-00-931-5568
NSN 5835-01-373-9506
NSN 5935-00-140-0471