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 5855-00-925-0114
NSN 6240-01-544-9579
NSN 6110-00-618-4171
NSN 5985-01-461-2669
NSN 5960-01-467-7516
NSN 5905-01-562-9678
NSN 6240-01-508-4146
NSN 6110-00-825-2988
NSN 5895-00-594-8819
NSN 6135-00-686-4777
NSN 6610-01-284-6968
NSN 5935-01-388-2949