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 5999-00-153-9671
NSN 5990-01-632-0969
NSN 5990-01-248-8222
NSN 6130-01-445-1261
NSN 5920-01-571-8460
NSN 6645-01-425-2330
NSN 5985-01-517-1900
NSN 5985-00-397-0389
NSN 6150-01-378-3747
NSN 6685-01-290-0950
NSN 6110-01-116-4251
NSN 6240-01-376-0306