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 5915-00-216-8185
NSN 7035-01-571-7504
NSN 6135-01-066-6904
NSN 5965-00-055-8013
NSN 5960-00-078-1643
NSN 6135-00-194-9354
NSN 5945-00-882-5522
NSN 5910-00-446-5855
NSN 5960-01-641-5493
NSN 5945-00-838-8777
NSN 6145-01-220-0884
NSN 5996-01-327-0220