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 6645-01-295-7418
NSN 5950-00-189-0551
NSN 6240-01-074-9407
NSN 6135-01-359-5798
NSN 6150-00-350-3086
NSN 5925-00-256-8548
NSN 6650-00-259-2605
NSN 5960-00-579-0298
NSN 5910-01-497-4876
NSN 6685-01-193-1733
NSN 6150-00-278-7070
NSN 6685-00-053-5558