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 6610-01-296-4462
NSN 5996-00-200-5610
NSN 5895-00-299-0154
NSN 5935-01-582-8597
NSN 5985-01-085-5573
NSN 6135-01-370-9441
NSN 6240-01-026-1376
NSN 6685-00-881-7305
NSN 6645-00-171-9639
NSN 6110-01-641-9750
NSN 5998-01-322-8579
NSN 6240-01-094-6262