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 5920-01-393-3011
NSN 6320-00-242-3300
NSN 5855-01-450-2333
NSN 6610-01-512-2025
NSN 6650-01-502-1873
NSN 6105-01-160-0427
NSN 5999-01-290-9424
NSN 6240-01-028-2971
NSN 6135-00-235-1938
NSN 5985-01-197-0366
NSN 6320-00-456-0836
NSN 5920-01-317-3506