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 5960-00-843-8063
NSN 5905-01-410-7780
NSN 5996-00-851-2604
NSN 5950-01-249-8395
NSN 6150-01-446-7659
NSN 5855-01-578-4914
NSN 6610-01-083-1446
NSN 5855-00-055-1579
NSN 5985-01-302-6109
NSN 6685-00-845-3101
NSN 6645-01-554-5881
NSN 5950-01-468-5431