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 6145-01-183-1079
NSN 6130-01-491-1352
NSN 6135-00-932-3136
NSN 5965-01-559-5612
NSN 6320-00-823-2015
NSN 5965-00-959-4910
NSN 5920-01-398-7123
NSN 5996-01-400-3558
NSN 7035-00-703-3535
NSN 5910-00-944-6384
NSN 6135-01-100-3593
NSN 5975-00-430-8082