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 6620-01-556-9512
NSN 5985-01-314-4776
NSN 5915-01-243-6682
NSN 5910-01-085-5500
NSN 5925-01-370-4417
NSN 6685-01-240-4648
NSN 2925-01-467-1192
NSN 5999-01-445-5571
NSN 6320-00-908-6841
NSN 5925-00-597-1558
NSN 6105-01-295-1773
NSN 6130-00-557-8486