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 6645-01-209-6881
NSN 6130-01-049-2984
NSN 5950-01-042-9106
NSN 6685-01-467-4854
NSN 5960-00-908-2416
NSN 5920-01-173-1014
NSN 5910-00-958-0414
NSN 6320-00-646-3311
NSN 5905-00-453-2596
NSN 5920-00-408-4423
NSN 6645-00-764-3355
NSN 5930-01-607-2741