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 5965-01-103-2711
NSN 5855-00-973-5717
NSN 5935-01-134-5154
NSN 6645-00-226-2270
NSN 5855-00-586-6255
NSN 5930-01-587-8845
NSN 6240-00-482-1142
NSN 5855-01-353-3958
NSN 5935-01-036-7513
NSN 5855-01-425-1330
NSN 5910-01-228-8152
NSN 5996-00-853-9067