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 5965-01-387-9609
NSN 5915-01-426-4849
NSN 5950-01-048-2315
NSN 7035-01-222-2534
NSN 5998-00-401-1789
NSN 5965-00-566-4221
NSN 6650-01-317-7580
NSN 5945-00-312-3108
NSN 5985-01-227-2220
NSN 6150-01-175-6187
NSN 6150-00-931-9266
NSN 4140-00-463-6166