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 6145-01-315-6397
NSN 5990-01-392-5682
NSN 5990-01-419-0661
NSN 6685-01-344-9389
NSN 6240-01-633-9357
NSN 6130-01-512-8510
NSN 5920-00-527-9473
NSN 6240-01-406-2317
NSN 5996-00-205-2933
NSN 6145-00-427-7201
NSN 6135-01-054-2462
NSN 5945-01-487-7149