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 5915-01-318-9636
NSN 5999-00-471-3513
NSN 6620-00-562-6337
NSN 5965-01-217-7167
NSN 5996-01-579-0202
NSN 5996-01-049-4302
NSN 6105-01-226-3015
NSN 5950-01-012-6866
NSN 4140-00-542-4611
NSN 6130-01-525-7941
NSN 6685-00-787-8594
NSN 6150-01-049-3437