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 6685-00-267-0938
NSN 6145-01-577-8266
NSN 6650-01-183-0711
NSN 5950-01-651-6476
NSN 6105-01-165-3823
NSN 4140-00-884-7780
NSN 6320-00-261-9136
NSN 6685-01-464-0677
NSN 6130-01-386-2894
NSN 6135-01-420-5907
NSN 6110-01-373-2233
NSN 6220-01-243-8661