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 5895-01-410-8980
NSN 6610-01-512-2025
NSN 6220-00-038-7532
NSN 6150-00-463-4971
NSN 6135-01-581-8843
NSN 6135-00-871-3646
NSN 5998-00-277-7552
NSN 6150-01-511-8587
NSN 6620-00-485-4136
NSN 6645-01-578-7959
NSN 6320-00-731-6134
NSN 5990-01-633-9503