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 5975-01-075-0583
NSN 5990-01-054-3332
NSN 4140-00-120-1203
NSN 5996-01-554-0479
NSN 5895-01-291-1135
NSN 5990-01-138-1481
NSN 4140-01-218-6674
NSN 6240-00-287-1988
NSN 5895-00-405-8859
NSN 5999-01-104-2033
NSN 5855-01-233-2767
NSN 6320-00-731-6134