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 6685-01-497-6193
NSN 6240-01-490-0764
NSN 6145-01-039-7677
NSN 5920-01-450-3523
NSN 5985-00-672-9325
NSN 5935-00-411-8826
NSN 6650-00-181-8376
NSN 5905-01-281-6479
NSN 6610-00-888-6731
NSN 6135-01-505-1293
NSN 6105-01-426-1852
NSN 2925-00-144-6405