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 6105-00-652-9576
NSN 5910-01-162-5622
NSN 5985-01-226-3492
NSN 6610-00-227-8846
NSN 7035-01-528-7870
NSN 6150-01-572-5263
NSN 5998-01-538-9217
NSN 6240-01-061-6516
NSN 5990-01-400-3299
NSN 5925-01-658-0578
NSN 5910-00-107-7788
NSN 6645-00-851-6654