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 5998-00-737-1220
NSN 5996-01-600-0348
NSN 5965-01-361-9760
NSN 5975-01-555-4360
NSN 2925-01-656-8217
NSN 6610-01-358-1161
NSN 6650-01-364-8504
NSN 5930-00-815-4161
NSN 5920-00-906-2500
NSN 6645-01-451-7933
NSN 6685-01-114-6809
NSN 6105-01-386-4038