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 5975-01-146-0947
NSN 5960-01-383-6262
NSN 5835-01-090-0784
NSN 6145-01-150-6018
NSN 5935-00-265-0705
NSN 6110-00-776-4611
NSN 5895-01-510-9431
NSN 5905-01-400-1986
NSN 5990-01-248-0108
NSN 7035-01-145-5059
NSN 6220-00-244-2040
NSN 5925-00-838-8668