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 5930-01-083-8700
NSN 5895-00-736-8521
NSN 5930-00-169-0883
NSN 5935-01-401-5324
NSN 6130-01-367-6010
NSN 6130-01-123-7586
NSN 5985-01-185-1012
NSN 5960-00-030-5485
NSN 6240-01-570-5976
NSN 6220-01-478-4348
NSN 6105-00-320-8322
NSN 5945-01-364-1950