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 6610-01-649-5326
NSN 6145-01-371-0977
NSN 5905-00-174-5096
NSN 6150-01-354-9437
NSN 5999-01-454-5162
NSN 5905-01-320-4371
NSN 6220-01-584-3638
NSN 5930-00-385-3653
NSN 5960-01-148-6908
NSN 5930-01-468-4092
NSN 5996-00-172-7553
NSN 6145-01-023-7719