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 5999-01-423-9847
NSN 5975-01-432-9528
NSN 5930-00-907-8948
NSN 5985-01-287-1497
NSN 4140-01-556-4259
NSN 5895-00-280-7528
NSN 5996-01-020-5759
NSN 6610-00-982-5281
NSN 6320-01-350-0320
NSN 5855-01-258-6180
NSN 6685-01-437-9113
NSN 5855-00-631-4565