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 6240-01-189-9339
NSN 5960-01-541-5734
NSN 6150-00-849-1350
NSN 6685-00-460-8761
NSN 6220-01-537-0129
NSN 6320-01-285-1922
NSN 5855-01-369-5037
NSN 6105-01-061-0124
NSN 5965-00-028-9646
NSN 6650-00-007-4372
NSN 6150-01-041-4884
NSN 5999-01-626-4403