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 5895-00-169-7912
NSN 6645-01-421-4007
NSN 5930-01-573-6768
NSN 6220-01-551-4346
NSN 6135-00-299-6918
NSN 6110-00-605-7496
NSN 5950-01-096-1993
NSN 6685-00-852-4824
NSN 5915-00-597-2369
NSN 5905-00-597-8280
NSN 6685-01-128-5662
NSN 6145-01-112-2573