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 5996-00-518-0460
NSN 5950-01-467-2191
NSN 5998-00-070-9389
NSN 5975-01-107-1758
NSN 5935-01-281-7686
NSN 2925-00-109-4694
NSN 6145-01-479-9191
NSN 6620-00-761-2540
NSN 6645-00-510-6643
NSN 6110-00-469-2517
NSN 6135-00-891-4944
NSN 6220-01-388-2624