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 6685-00-299-8496
NSN 5910-01-503-6285
NSN 5895-00-153-2595
NSN 5925-01-495-0602
NSN 6105-01-327-8733
NSN 5915-01-561-4967
NSN 5930-00-100-0163
NSN 7035-01-106-3476
NSN 5990-01-486-2556
NSN 4140-01-279-8893
NSN 5920-01-298-1382
NSN 5960-00-232-9108