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 5985-01-053-6070
NSN 5950-00-832-3261
NSN 5945-00-808-0011
NSN 5915-01-231-9174
NSN 6685-01-419-9738
NSN 5920-01-481-6764
NSN 5945-01-261-6750
NSN 6645-01-220-2838
NSN 6685-01-317-4839
NSN 5950-00-222-7295
NSN 5915-01-189-4248
NSN 5999-01-243-1665