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 6145-00-530-0951
NSN 5985-00-288-6001
NSN 5999-01-352-5556
NSN 5990-01-442-3520
NSN 2925-00-670-0638
NSN 5945-00-467-3020
NSN 6320-00-422-9006
NSN 4140-00-850-5080
NSN 5910-01-604-9544
NSN 6645-01-341-3436
NSN 5895-00-501-8174
NSN 5930-00-561-6770