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 5950-01-135-7433
NSN 5920-00-263-2192
NSN 6645-00-881-9978
NSN 5855-00-198-3197
NSN 5990-01-335-7948
NSN 5855-01-312-5160
NSN 5950-00-050-8797
NSN 5985-01-230-5934
NSN 5965-01-006-7915
NSN 6650-00-455-5974
NSN 5965-01-241-0553
NSN 5935-01-520-3826