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 5950-00-966-4919
NSN 6685-01-102-9709
NSN 6610-01-512-2025
NSN 5998-01-443-2552
NSN 6220-01-646-5501
NSN 6150-01-099-3239
NSN 6685-00-144-6362
NSN 6620-00-325-4693
NSN 5965-01-182-5768
NSN 5996-01-227-4496
NSN 5975-01-444-4832
NSN 5835-01-602-0311