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 6320-01-046-5228
NSN 5985-01-634-0635
NSN 5996-01-454-1821
NSN 2925-01-179-7795
NSN 5920-00-722-4894
NSN 6105-01-158-6960
NSN 5985-01-217-3519
NSN 6240-01-094-6262
NSN 5910-01-572-1427
NSN 7035-00-703-3535
NSN 6320-01-476-7702
NSN 6685-00-900-5428