A circular shaped item with an aperture manufactured to predetermined dimensions and designed for use as a seal in stuffing boxes, packing nuts, and the like. It may be (1) any nonmetallic molded or formed ring (except solid (without joint) rings having a square or rectangular cross section); or (2) any shredded metal or metal foil type metallic or semimetallic rings. Excludes felt items but includes multimaterial items in which one of the materials is felt. For solid (without joints) nonmetallic items with a square or rectangular cross section, see washer (as modified) and gasket. For rubber items specifically designed for weather-proofing doors, windows, chests, and the like see seal, nonmetallic angle; seal, nonmetallic channel; and seal, nonmetallic, special shaped section. For circular (with aperature) nonmetallic items with a solid round cross-section see o-ring. Excludes cup, compression; gasket; washer (as modified); and felt, mechanical, preformed.
Classification: Gaskets,washers & other seals
NSN 5950-00-951-0689
NSN 5930-01-121-0568
NSN 5945-00-165-3878
NSN 6135-00-321-6707
NSN 6685-01-154-0572
NSN 6110-01-544-0066
NSN 5910-01-062-8653
NSN 6685-01-391-5316
NSN 5985-01-626-0085
NSN 5975-01-207-1706
NSN 5996-01-110-1028
NSN 6320-01-162-5977