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 6145-00-248-4944
NSN 6610-00-608-1907
NSN 6320-01-106-4414
NSN 5985-00-958-7511
NSN 5935-01-072-0418
NSN 5950-01-065-0858
NSN 5985-01-055-5656
NSN 5935-00-222-4723
NSN 5920-01-066-1799
NSN 5920-01-306-5624
NSN 5895-01-375-3365
NSN 5915-01-029-4128