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 5895-01-065-4445
NSN 6130-00-228-6297
NSN 6645-01-059-2712
NSN 5990-01-264-9759
NSN 5985-01-193-4185
NSN 5998-01-552-3802
NSN 5920-00-949-3468
NSN 4140-00-975-5070
NSN 6650-01-436-8558
NSN 5975-00-807-4108
NSN 6105-01-052-1672
NSN 5996-00-456-0895