Known as; freeze plug block l
No other part numbers with same form, fit, and function found.
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 6650-01-534-5787
NSN 6645-01-633-1852
NSN 6610-01-306-8530
NSN 5910-01-388-1146
NSN 5915-01-435-7603
NSN 5985-01-429-5716
NSN 5925-00-763-4104
NSN 6620-00-970-2363
NSN 4140-01-089-9724
NSN 6685-00-324-5405
NSN 6150-00-479-8773
NSN 6110-01-225-4137