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.
Italy 
Greece 
Turkey Classification: Gaskets,washers & other seals
NSN 5930-00-798-5446
NSN 6610-00-011-9991
NSN 6645-00-933-2170
NSN 5999-01-185-6604
NSN 5960-01-008-5670
NSN 7035-00-849-5526
NSN 6320-01-092-4101
NSN 6130-00-180-5149
NSN 5985-00-617-3706
NSN 5835-01-014-4574
NSN 5835-01-268-1924
NSN 6110-00-123-1793