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.
Classification: Gaskets,washers & other seals
NSN 5895-01-249-8754
NSN 6145-01-611-7640
NSN 6110-01-222-2027
NSN 5960-01-381-2478
NSN 4140-01-324-6331
NSN 5930-00-533-6169
NSN 5950-00-887-0632
NSN 5910-01-100-3282
NSN 5920-00-986-3922
NSN 5998-00-175-9007
NSN 6150-01-111-7786
NSN 5975-01-562-0436