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 6620-01-158-3125
NSN 6320-01-271-0247
NSN 5905-00-852-5584
NSN 6130-01-094-7070
NSN 6105-00-764-6483
NSN 5920-01-610-8905
NSN 5998-00-376-5506
NSN 6610-01-055-4147
NSN 5996-01-043-2105
NSN 6135-01-455-2233
NSN 6135-00-728-9860
NSN 5990-00-606-8299