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 5920-01-364-9164
NSN 6620-00-890-8579
NSN 5996-01-455-9921
NSN 6130-01-161-7638
NSN 6240-00-449-6003
NSN 5998-01-273-5282
NSN 6130-00-176-1664
NSN 6685-00-581-8868
NSN 5935-00-222-7883
NSN 5855-01-354-3463
NSN 6650-01-211-2673
NSN 5920-01-384-9776