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 6685-01-101-7495
NSN 5895-00-857-0774
NSN 5915-00-577-7800
NSN 6145-00-487-8015
NSN 5996-00-821-8136
NSN 5910-01-608-0434
NSN 4140-00-204-3563
NSN 5996-00-179-3203
NSN 6105-00-265-0506
NSN 5965-00-928-6983
NSN 5835-00-458-4392
NSN 5915-01-519-3287