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 6650-00-382-6080
NSN 6110-00-960-7341
NSN 5998-00-001-8571
NSN 6145-01-087-4933
NSN 5895-01-197-5009
NSN 5950-00-142-0609
NSN 5996-01-577-9696
NSN 6240-01-378-2135
NSN 5990-01-503-9804
NSN 6110-01-501-7366
NSN 6320-01-078-8257
NSN 6135-01-586-5018