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 5999-01-088-7539
NSN 5920-01-256-5830
NSN 5835-01-012-1436
NSN 6130-01-312-8449
NSN 6610-00-841-8221
NSN 6130-01-519-9166
NSN 5835-01-541-9991
NSN 4140-01-262-5371
NSN 6685-01-017-1419
NSN 5998-00-317-2857
NSN 6240-01-409-2465
NSN 5905-01-520-9751