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 5935-01-438-4426
NSN 6145-01-420-2342
NSN 5950-00-559-4032
NSN 5895-00-240-5651
NSN 6620-01-573-5794
NSN 5960-00-197-6282
NSN 5910-01-587-1303
NSN 6650-01-333-3646
NSN 5965-01-251-4381
NSN 6645-00-149-1100
NSN 5996-01-245-7123
NSN 5996-00-141-3945