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 5925-01-391-9019
NSN 5905-00-158-5155
NSN 7035-01-252-5919
NSN 5999-00-891-9609
NSN 4140-01-463-7952
NSN 4140-01-547-5589
NSN 5935-01-032-5442
NSN 5920-00-783-7859
NSN 6105-01-354-3580
NSN 6110-00-271-9928
NSN 5999-01-106-2705
NSN 5835-01-553-4894