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 6105-00-872-7009
NSN 5930-01-463-7331
NSN 7035-01-225-5114
NSN 2925-01-097-0903
NSN 6620-01-219-7432
NSN 2925-00-596-9775
NSN 6105-01-393-1750
NSN 6110-01-119-8611
NSN 5895-00-455-0248
NSN 6645-01-409-1529
NSN 6220-01-365-7989
NSN 5835-00-145-8926