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 5998-01-557-5375
NSN 6110-00-325-4519
NSN 6240-01-122-5856
NSN 5895-01-407-7073
NSN 5945-01-514-0429
NSN 5915-01-242-6892
NSN 5895-01-023-8446
NSN 5960-01-474-4843
NSN 4140-01-502-6259
NSN 5950-00-958-2567
NSN 5990-01-608-3505
NSN 6320-01-516-3836