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 6685-01-606-1660
NSN 6135-00-583-3966
NSN 5998-01-496-1807
NSN 6620-00-555-3992
NSN 5910-00-125-7122
NSN 5999-01-588-4547
NSN 2925-01-446-0525
NSN 6620-01-648-1594
NSN 6130-00-587-6104
NSN 5835-00-422-1441
NSN 7035-01-049-6776
NSN 5960-00-900-6705