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 6610-01-175-5920
NSN 5999-01-431-7323
NSN 5965-01-256-0059
NSN 6610-01-374-9048
NSN 6240-01-187-7758
NSN 6110-01-203-0572
NSN 6150-01-642-4120
NSN 6650-01-041-9846
NSN 6650-01-556-6941
NSN 6320-00-994-0179
NSN 5920-00-862-5820
NSN 5985-01-629-8495