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 5999-00-729-7990
NSN 6685-00-968-6120
NSN 5935-01-116-3015
NSN 6220-00-710-7289
NSN 5999-01-443-5379
NSN 5905-01-294-1483
NSN 5920-01-496-4617
NSN 5996-01-415-1028
NSN 5999-00-564-1579
NSN 6150-01-141-4998
NSN 5835-01-209-6410
NSN 5920-00-204-8125