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 6220-01-031-9505
NSN 6130-01-544-6284
NSN 5930-01-408-4256
NSN 6650-00-925-1274
NSN 5990-01-360-2900
NSN 6610-00-681-0590
NSN 6110-01-094-3907
NSN 6130-00-632-9275
NSN 5996-01-576-9003
NSN 5999-01-327-3067
NSN 5935-00-201-6594
NSN 6240-01-217-7586