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 5990-00-005-5215
NSN 2925-01-408-1480
NSN 5855-00-631-4565
NSN 5950-01-336-8935
NSN 5925-00-284-3726
NSN 5835-01-555-8963
NSN 6685-00-036-7120
NSN 5910-01-221-1665
NSN 6240-00-926-1213
NSN 5930-00-129-6675
NSN 5996-01-057-1113
NSN 5985-01-407-6455