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 2925-00-516-8841
NSN 5835-01-024-9249
NSN 6685-00-279-3620
NSN 5925-01-311-9924
NSN 5990-01-068-1651
NSN 5835-00-512-4424
NSN 5930-01-123-8586
NSN 5975-01-283-4085
NSN 6105-00-398-4673
NSN 5855-00-411-8688
NSN 5855-01-007-9541
NSN 5999-00-409-3195