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 5910-01-092-0502
NSN 6610-00-982-2778
NSN 2925-01-161-7440
NSN 5996-00-548-5179
NSN 6145-01-465-8433
NSN 5999-01-560-8684
NSN 6320-01-504-3948
NSN 6220-00-818-6478
NSN 6150-00-569-4755
NSN 6135-00-577-8429
NSN 5999-01-133-3519
NSN 5998-01-153-2689