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 6105-01-095-4260
NSN 5975-01-514-2798
NSN 5895-01-076-4204
NSN 6620-01-532-9023
NSN 6145-01-230-3595
NSN 6685-00-726-8146
NSN 5975-01-547-0798
NSN 5965-01-628-3624
NSN 6685-01-215-3751
NSN 5999-01-305-7588
NSN 6320-00-823-2015
NSN 6105-01-507-5260