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 5950-00-176-2874
NSN 6620-01-106-2814
NSN 5945-01-406-7773
NSN 6150-01-136-7056
NSN 5950-01-267-1279
NSN 5930-00-210-8889
NSN 6110-00-246-3941
NSN 6610-00-416-9830
NSN 5930-00-262-0889
NSN 6645-00-127-3835
NSN 5935-01-630-1668
NSN 5895-01-275-8893