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 5835-01-029-5602
NSN 6145-01-381-4572
NSN 5930-00-222-4682
NSN 5945-01-327-2697
NSN 6240-00-280-8502
NSN 4140-01-319-7068
NSN 6150-01-110-2506
NSN 5920-00-954-7270
NSN 5965-01-053-1758
NSN 5930-01-068-2710
NSN 5998-00-243-5433
NSN 5920-01-290-3771