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 2925-01-535-7235
NSN 6135-00-321-6707
NSN 6685-01-185-3968
NSN 5960-01-381-1868
NSN 6685-01-386-1887
NSN 5950-01-432-0242
NSN 5915-00-391-5735
NSN 6145-01-614-3234
NSN 5930-01-201-6501
NSN 5960-01-641-5493
NSN 6110-01-058-9543
NSN 5975-01-620-9475