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 6610-00-184-0833
NSN 6145-01-484-8735
NSN 5945-00-491-8253
NSN 5910-00-952-3775
NSN 6685-01-391-9078
NSN 6145-01-291-4252
NSN 6135-00-990-1822
NSN 5985-01-198-2912
NSN 5950-01-343-0820
NSN 5975-01-417-1752
NSN 6610-01-544-1168
NSN 5835-00-155-1379