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 6135-01-633-8502
NSN 4140-01-025-7404
NSN 6150-00-613-3076
NSN 5895-01-397-6311
NSN 5996-01-128-8802
NSN 5998-00-529-2551
NSN 5915-01-526-9787
NSN 5999-01-231-9728
NSN 6610-01-231-9283
NSN 5855-00-560-0110
NSN 5999-01-222-8175
NSN 6650-01-585-1716