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 6135-01-393-4746
NSN 6610-01-179-0116
NSN 6130-01-096-9268
NSN 6105-01-353-9082
NSN 6145-01-529-1965
NSN 5985-01-351-5671
NSN 5935-00-200-1017
NSN 6645-01-340-4191
NSN 5990-01-387-6114
NSN 5975-01-105-1878
NSN 4140-01-501-6031
NSN 6110-01-459-1269