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 5945-00-354-2831
NSN 5855-01-634-0259
NSN 5925-00-997-8234
NSN 6145-01-579-4395
NSN 5998-00-753-7856
NSN 5945-01-576-4715
NSN 6650-01-032-1786
NSN 5960-01-156-7469
NSN 6145-00-256-8430
NSN 6645-00-654-8804
NSN 5855-01-076-5202
NSN 5998-00-872-6104