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 6320-00-306-0124
NSN 5990-01-088-5293
NSN 5999-01-271-8846
NSN 5895-01-148-5753
NSN 6150-01-328-6757
NSN 5905-01-256-8069
NSN 6150-00-964-7303
NSN 5835-01-426-6573
NSN 4140-01-482-8447
NSN 5960-01-233-0311
NSN 5975-01-073-0763
NSN 6150-01-082-2331