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 6685-00-988-0975
NSN 6150-01-509-0407
NSN 5965-01-312-1630
NSN 6650-01-381-3542
NSN 6110-01-044-7367
NSN 5930-01-632-0413
NSN 5925-01-426-6923
NSN 5985-01-047-1908
NSN 6150-01-069-4662
NSN 6610-00-278-7647
NSN 5910-00-101-5823
NSN 5945-01-462-5234