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 6105-00-992-7167
NSN 5915-01-036-3614
NSN 6685-01-560-1881
NSN 5975-01-470-9210
NSN 5835-00-289-9080
NSN 4140-01-349-5320
NSN 6685-01-243-1265
NSN 6650-01-544-0366
NSN 5998-00-445-6115
NSN 4140-01-397-1311
NSN 6645-01-326-2560
NSN 5915-01-555-8081