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 7035-00-797-2635
NSN 7035-01-410-9197
NSN 6645-00-988-4427
NSN 6130-01-538-6792
NSN 6110-01-453-2521
NSN 6150-00-243-9531
NSN 5965-01-265-6814
NSN 5985-00-727-7239
NSN 5950-01-449-8794
NSN 5935-01-313-7549
NSN 6135-01-565-3284
NSN 5998-00-227-2118