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 5975-01-096-6270
NSN 7035-00-104-7613
NSN 6645-00-144-3392
NSN 6135-00-403-0213
NSN 5835-01-331-5735
NSN 6130-01-023-8031
NSN 4140-01-224-7662
NSN 5895-01-463-7659
NSN 6240-01-418-5021
NSN 5935-01-070-4501
NSN 6105-01-629-2854
NSN 5999-01-350-5667