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 5835-01-560-3486
NSN 5998-01-026-9351
NSN 6240-01-500-0850
NSN 5915-00-265-0967
NSN 6145-01-571-6875
NSN 6150-01-154-3673
NSN 6135-01-438-0228
NSN 6220-00-028-3964
NSN 5985-01-265-1100
NSN 6150-01-210-5491
NSN 7035-00-205-8739
NSN 6150-01-380-2223