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 5915-00-404-6729
NSN 6110-01-630-7822
NSN 6650-00-680-9595
NSN 5935-00-983-6358
NSN 5965-01-004-9404
NSN 2925-01-236-3547
NSN 6610-01-582-8181
NSN 5895-00-994-5115
NSN 5985-00-977-9349
NSN 5895-01-388-9963
NSN 6150-00-145-8922
NSN 6130-01-223-0839