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 5999-01-449-9527
NSN 6110-00-954-0718
NSN 6150-01-347-2545
NSN 6240-01-425-1939
NSN 6135-01-370-2599
NSN 2925-01-258-8141
NSN 5835-01-641-0073
NSN 5920-00-661-0840
NSN 6240-00-811-7162
NSN 6650-01-411-6292
NSN 5895-00-956-8936
NSN 6145-01-474-9151