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 5915-01-049-9256
NSN 6150-00-063-8715
NSN 6105-00-201-8977
NSN 5950-00-956-9787
NSN 5920-00-904-0690
NSN 5895-01-264-7724
NSN 6650-01-456-9613
NSN 4140-01-591-5180
NSN 5915-01-089-7930
NSN 6130-01-510-3791
NSN 5965-01-029-5222
NSN 5920-01-313-9341