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 5998-01-252-8803
NSN 5960-00-082-0039
NSN 6150-01-106-8675
NSN 6135-01-222-5464
NSN 5905-00-570-8267
NSN 5990-01-337-4584
NSN 6135-00-567-1322
NSN 5920-00-945-1632
NSN 5915-01-417-3123
NSN 5920-01-429-1375
NSN 5996-01-164-8266
NSN 5990-00-740-0249