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 6150-01-264-7411
NSN 6240-01-030-1183
NSN 6610-01-484-3161
NSN 5905-01-096-6933
NSN 5925-01-424-1407
NSN 5945-00-351-0099
NSN 6685-00-192-1461
NSN 6320-01-512-2031
NSN 5855-01-454-1538
NSN 5835-01-023-8733
NSN 6110-01-496-1388
NSN 5920-01-173-4108