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 5945-00-342-4653
NSN 4140-01-455-3837
NSN 5910-00-964-8472
NSN 4140-01-203-6091
NSN 6685-01-424-0975
NSN 5935-01-584-6950
NSN 6150-01-104-4323
NSN 5835-00-513-9680
NSN 5935-00-689-2918
NSN 5910-01-360-1447
NSN 5945-00-581-9875
NSN 5965-00-831-2134