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 4140-00-690-0382
NSN 6685-00-242-6722
NSN 4140-01-420-6817
NSN 6105-01-426-3287
NSN 5990-01-425-2175
NSN 5905-00-150-5705
NSN 5965-01-411-4767
NSN 6110-01-068-0301
NSN 5975-00-181-5825
NSN 6610-00-834-0713
NSN 5910-00-260-6944
NSN 5895-01-517-3643