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 6105-00-862-9839
NSN 5930-01-602-8033
NSN 6135-01-324-7718
NSN 5855-00-294-7532
NSN 6645-01-521-3180
NSN 6105-00-796-2905
NSN 6135-01-244-5580
NSN 6135-01-487-6275
NSN 6220-01-631-4630
NSN 5920-01-413-8513
NSN 6130-00-896-9511
NSN 5930-01-329-2760