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 5855-01-528-8776
NSN 5895-01-108-2081
NSN 5985-01-472-2995
NSN 6685-01-316-8540
NSN 5935-01-339-5585
NSN 6150-01-165-6525
NSN 6110-01-202-8896
NSN 5855-01-100-3272
NSN 6110-01-383-3255
NSN 5998-01-158-6067
NSN 6645-00-310-5839
NSN 5910-01-439-9521