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 5996-00-964-5229
NSN 6645-01-111-1144
NSN 5835-00-034-4976
NSN 5975-01-487-7080
NSN 5855-01-295-2313
NSN 5960-01-573-6483
NSN 6320-01-322-8249
NSN 6145-00-901-0547
NSN 6220-00-167-2154
NSN 6650-01-211-5628
NSN 6645-00-313-2324
NSN 5996-00-581-5810