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.
Slovenia 
Malaysia 
Australia 
France 
United Kingdom 
Netherlands 
Greece 
NATO Maintenance and Supply Agency Classification: Gaskets,washers & other seals
NSN 5985-01-053-6830
NSN 6320-00-360-1744
NSN 6645-01-400-2119
NSN 6240-01-437-6888
NSN 6645-01-072-8367
NSN 5998-01-089-9059
NSN 5998-01-062-2657
NSN 5935-00-266-8506
NSN 6105-01-174-0899
NSN 6110-01-485-3312
NSN 5925-01-659-6663
NSN 2925-01-166-4589