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 6150-00-114-2785
NSN 5990-01-411-5930
NSN 5960-01-550-8038
NSN 5960-01-552-0862
NSN 5895-01-204-5639
NSN 6145-00-236-3226
NSN 5998-00-182-9902
NSN 6240-00-185-8367
NSN 5855-00-361-0167
NSN 5855-01-236-9645
NSN 5960-01-505-2426
NSN 6240-01-247-1512