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 6135-00-826-4798
NSN 6220-01-172-5300
NSN 5935-01-094-1897
NSN 6150-01-361-6073
NSN 5950-01-575-0324
NSN 5996-01-660-1654
NSN 6220-01-612-4460
NSN 5950-01-416-4387
NSN 6645-01-627-8040
NSN 5855-00-235-2676
NSN 2925-01-448-2880
NSN 5950-01-227-2466