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 5930-01-501-5611
NSN 6320-00-646-3311
NSN 5895-01-240-0569
NSN 5925-01-598-7114
NSN 6150-01-081-3301
NSN 5925-01-312-2209
NSN 5855-01-363-7491
NSN 6150-00-872-4634
NSN 5905-01-427-3528
NSN 6145-01-005-4654
NSN 6240-01-513-0754
NSN 6105-01-310-9799