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 5975-00-273-0790
NSN 6110-01-160-7706
NSN 6130-00-420-2412
NSN 6220-00-163-1183
NSN 2925-01-436-7325
NSN 6105-00-229-8622
NSN 5895-01-467-9643
NSN 6620-00-102-7442
NSN 5965-01-390-3989
NSN 5835-00-170-5238
NSN 5996-01-374-2323
NSN 5945-00-932-0080