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 5960-01-366-6246
NSN 6150-01-007-7136
NSN 2925-01-394-5650
NSN 5950-00-905-9984
NSN 5910-01-537-0532
NSN 6220-01-235-9027
NSN 6220-00-166-9795
NSN 5945-01-290-4370
NSN 5950-00-677-4212
NSN 6650-01-305-4567
NSN 6110-01-250-2936
NSN 5905-01-088-8623