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 5915-01-295-6345
NSN 6240-00-954-0124
NSN 6610-01-184-3210
NSN 6620-01-551-7071
NSN 5920-01-423-0805
NSN 5855-01-575-3154
NSN 5950-01-451-3518
NSN 6650-00-110-9186
NSN 5855-01-418-6303
NSN 6150-01-247-1059
NSN 7035-00-104-7613
NSN 6145-00-763-6077