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 6135-01-151-2705
NSN 6620-00-538-8746
NSN 6130-01-477-6884
NSN 5895-00-081-7836
NSN 5985-01-641-7303
NSN 5920-01-025-8858
NSN 6110-00-269-2696
NSN 5935-00-259-7723
NSN 5965-00-080-2045
NSN 5965-01-386-2988
NSN 5960-00-409-9604
NSN 5855-00-494-9581