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 5990-00-337-5359
NSN 6220-01-411-2716
NSN 5895-01-506-0920
NSN 6685-01-418-8753
NSN 5960-00-054-3946
NSN 5915-00-731-8211
NSN 5975-00-267-2776
NSN 5910-00-376-9762
NSN 7035-01-490-1696
NSN 5895-01-661-1072
NSN 6150-00-907-9324
NSN 6320-01-564-0893