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 2925-01-534-7314
NSN 5945-01-437-8541
NSN 5905-01-369-6336
NSN 5950-01-227-5363
NSN 5975-00-665-3644
NSN 5999-00-276-9299
NSN 5930-01-468-5116
NSN 6150-01-371-3023
NSN 5915-01-024-1093
NSN 5996-01-503-4233
NSN 5950-01-215-0703
NSN 2925-00-778-0645