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 6685-01-651-2294
NSN 6150-00-233-8035
NSN 5960-00-729-8150
NSN 4140-01-522-9932
NSN 6130-01-088-5942
NSN 5910-00-054-2229
NSN 6320-01-399-6177
NSN 6320-00-456-0836
NSN 6110-00-185-8147
NSN 5910-01-131-4088
NSN 5945-00-347-5153
NSN 6105-01-612-8650