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 7035-00-541-8516
NSN 5935-01-415-5787
NSN 6240-01-289-2805
NSN 6220-00-733-4658
NSN 6320-01-393-7022
NSN 2925-00-964-7128
NSN 5855-01-539-4296
NSN 6610-01-480-8915
NSN 2925-00-603-3986
NSN 5910-01-147-5722
NSN 5960-01-053-4358
NSN 6135-01-592-4139