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 5925-01-406-4093
NSN 5935-01-426-8969
NSN 6320-00-937-5625
NSN 5990-01-434-7913
NSN 6685-00-822-2467
NSN 6105-01-094-0611
NSN 6240-00-268-8356
NSN 6110-01-090-2583
NSN 5975-01-337-5068
NSN 5835-01-461-8184
NSN 6145-01-417-5762
NSN 5999-00-316-4890