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 6685-01-463-9153
NSN 5990-01-443-2931
NSN 5985-01-482-9025
NSN 6685-01-430-1940
NSN 5915-00-343-6814
NSN 5915-01-550-1406
NSN 5960-00-832-8449
NSN 6135-00-305-2052
NSN 6650-01-519-9165
NSN 6240-01-392-5991
NSN 5935-01-425-0734
NSN 5935-01-019-2231