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 6150-00-928-4961
NSN 5855-01-225-5855
NSN 6220-01-240-4695
NSN 6145-01-094-6108
NSN 6645-01-270-3176
NSN 5996-01-328-5635
NSN 6645-00-679-8203
NSN 5960-01-204-5820
NSN 5996-01-414-9827
NSN 6220-01-525-8097
NSN 5990-01-498-0641
NSN 6320-00-937-5625