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 5835-00-074-3700
NSN 6220-01-645-5767
NSN 6645-01-436-9702
NSN 5965-01-049-8307
NSN 5950-01-167-7945
NSN 6130-00-065-8677
NSN 5920-01-484-9924
NSN 5990-00-963-1799
NSN 6220-01-251-2138
NSN 5985-01-310-4476
NSN 5920-00-581-1355
NSN 7035-01-096-8912