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 6610-01-560-9461
NSN 6105-01-285-6453
NSN 5999-01-088-4916
NSN 6610-00-951-2735
NSN 6220-01-110-9708
NSN 5930-00-077-1730
NSN 6610-01-633-8931
NSN 2925-01-618-5706
NSN 5835-00-707-6266
NSN 6150-01-253-0910
NSN 6110-01-339-2031
NSN 5895-00-971-2288