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 6685-01-481-9705
NSN 6240-01-512-1856
NSN 5835-01-406-4066
NSN 5998-01-350-1551
NSN 5999-00-285-2987
NSN 5835-01-227-4752
NSN 6220-01-449-1239
NSN 6220-01-605-6609
NSN 6685-00-854-9169
NSN 5920-00-082-7561
NSN 2925-01-041-8201
NSN 5960-01-399-4327