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 6145-01-060-3485
NSN 5960-01-341-5198
NSN 6150-01-562-5953
NSN 5945-01-658-7851
NSN 5920-00-340-3002
NSN 5985-01-443-3287
NSN 5915-01-206-8810
NSN 5975-01-094-6250
NSN 5905-01-260-6539
NSN 5996-01-068-5790
NSN 5990-00-929-8923
NSN 5920-01-108-9247