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.
Brazil 
Spain 
France 
Greece 
Turkey 
NATO Maintenance and Supply Agency Classification: Gaskets,washers & other seals
NSN 6220-01-127-2125
NSN 6105-01-420-1019
NSN 6105-01-435-5530
NSN 5895-01-485-2470
NSN 5925-01-452-7070
NSN 6105-00-655-0893
NSN 6320-00-331-7138
NSN 5996-01-462-0112
NSN 5855-01-175-3990
NSN 6610-00-906-5723
NSN 5985-00-292-9206
NSN 6220-01-517-9338