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 5950-01-153-7585
NSN 6130-00-470-0522
NSN 6650-00-399-9256
NSN 6650-00-620-0212
NSN 6620-01-407-5619
NSN 6685-01-166-5302
NSN 6220-00-948-0466
NSN 6130-00-643-4894
NSN 5930-00-455-4842
NSN 7035-00-436-1229
NSN 5935-00-906-1953
NSN 5910-00-244-1622