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 5998-01-138-0882
NSN 6105-00-388-3249
NSN 6650-01-207-2905
NSN 6620-00-833-6786
NSN 6145-00-072-4878
NSN 5910-01-239-0109
NSN 5920-01-020-0059
NSN 6620-00-518-3595
NSN 5945-01-492-6697
NSN 5930-00-103-0273
NSN 6610-01-167-0845
NSN 5975-00-072-1542