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 6110-00-919-3580
NSN 5990-00-170-4239
NSN 5910-00-626-9831
NSN 2925-01-381-5307
NSN 6320-01-021-6633
NSN 6645-01-467-9983
NSN 5985-00-979-5930
NSN 6130-01-657-2530
NSN 5905-01-025-1186
NSN 5996-01-303-8361
NSN 6650-01-024-9554
NSN 6135-01-069-8575