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 6145-00-248-8965
NSN 5930-00-260-5086
NSN 7035-00-585-2113
NSN 7035-01-544-6975
NSN 5998-01-481-3907
NSN 5920-00-900-5336
NSN 5925-00-290-4451
NSN 5960-00-215-5884
NSN 5835-00-168-9623
NSN 5998-00-191-5303
NSN 6145-00-470-1606
NSN 6645-01-392-4788