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.
Spain 
Australia 
France 
United Kingdom 
Portugal 
Denmark Classification: Gaskets,washers & other seals
NSN 5895-00-882-4944
NSN 6685-01-245-3318
NSN 5945-01-393-3579
NSN 5998-01-315-9122
NSN 6220-01-100-5093
NSN 5996-00-905-6610
NSN 6610-01-187-0875
NSN 6150-01-568-9957
NSN 6110-01-097-6805
NSN 6145-01-462-1764
NSN 5985-00-428-8621
NSN 5999-01-615-0938