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 5990-00-964-9672
NSN 7035-00-167-7411
NSN 5998-01-466-6097
NSN 6135-00-294-0950
NSN 6105-01-357-9749
NSN 6685-01-291-6453
NSN 5935-01-023-1214
NSN 6650-01-433-2892
NSN 6130-01-408-0415
NSN 6650-01-249-3201
NSN 5996-01-407-3777
NSN 5935-01-366-4253