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 4140-01-442-8120
NSN 6130-00-277-7321
NSN 5935-01-456-2828
NSN 5925-01-424-8343
NSN 6685-00-478-1858
NSN 6610-01-652-9477
NSN 2925-00-806-7972
NSN 5960-01-133-3153
NSN 5960-00-818-3504
NSN 5935-00-174-2791
NSN 6240-01-331-5246
NSN 5910-01-339-8510