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 5950-01-029-5242
NSN 5965-01-393-5833
NSN 6150-01-290-9384
NSN 5895-00-396-3162
NSN 5950-01-153-0668
NSN 6320-01-504-3948
NSN 5855-00-631-4565
NSN 5905-01-447-2806
NSN 6145-00-653-2448
NSN 5990-00-452-9194
NSN 5935-00-403-8435
NSN 6240-00-729-9696