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 5920-00-660-6705
NSN 5999-01-098-8263
NSN 5895-00-757-9250
NSN 6135-00-134-6648
NSN 6620-01-319-9804
NSN 5905-01-330-4790
NSN 5930-00-319-4719
NSN 5835-01-632-6627
NSN 5855-01-034-3845
NSN 5905-01-442-5071
NSN 5950-00-847-6839
NSN 5930-01-588-7270