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 5835-01-568-7796
NSN 6110-00-343-1618
NSN 5920-01-112-4368
NSN 5945-01-344-6175
NSN 5915-01-441-5444
NSN 6685-01-278-6951
NSN 5950-01-434-2514
NSN 5925-01-428-9332
NSN 6150-00-767-0346
NSN 5996-00-995-5117
NSN 6685-01-360-5202
NSN 5990-00-864-6513