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 5910-01-194-2387
NSN 6320-01-491-0327
NSN 5998-00-151-8609
NSN 5905-00-721-4378
NSN 6320-01-029-4220
NSN 6645-00-551-8291
NSN 5985-00-026-9573
NSN 5996-01-256-8630
NSN 6135-01-168-2944
NSN 6135-01-462-6040
NSN 5920-01-487-3700
NSN 5915-00-045-9071