Reference manual no. 37013-250
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 6620-00-447-1360
NSN 6220-01-141-1143
NSN 6220-01-355-7150
NSN 5935-01-421-3876
NSN 6220-01-126-1909
NSN 6135-00-305-2052
NSN 5935-01-100-4604
NSN 5985-01-327-3601
NSN 6105-01-386-4038
NSN 5950-01-020-9160
NSN 5915-01-359-1429
NSN 6320-00-725-0754