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 5990-01-277-9753
NSN 5985-01-499-3253
NSN 6105-01-246-5375
NSN 5996-01-145-6557
NSN 5950-01-089-0576
NSN 5925-01-413-6811
NSN 5930-01-231-9605
NSN 5990-01-633-9503
NSN 5950-00-079-1722
NSN 5965-00-806-7593
NSN 6610-01-155-2661
NSN 6105-00-955-9216