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 6135-00-145-8884
NSN 5835-01-286-6499
NSN 6110-01-174-8414
NSN 6150-01-399-1909
NSN 5975-01-541-7471
NSN 6220-01-010-3958
NSN 2925-01-583-5619
NSN 5996-01-146-6810
NSN 5960-00-602-4257
NSN 5925-01-587-3500
NSN 6320-01-090-8296
NSN 6685-01-389-0864