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 5935-00-920-8633
NSN 5835-00-564-0057
NSN 6145-00-249-6641
NSN 5950-01-012-3939
NSN 5945-00-376-4930
NSN 6650-00-031-8467
NSN 5930-01-474-3056
NSN 6150-00-918-3900
NSN 5990-01-176-2724
NSN 5895-00-959-2284
NSN 5965-00-630-7872
NSN 5895-00-381-9712