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 6320-01-160-7757
NSN 5910-01-387-9656
NSN 5965-01-231-9125
NSN 5855-01-380-9950
NSN 5915-01-289-9907
NSN 5999-00-932-3690
NSN 5945-01-332-3274
NSN 6240-00-906-6116
NSN 6645-01-593-6149
NSN 5965-01-645-9432
NSN 5996-01-183-3632
NSN 6645-01-073-5302