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 6685-01-216-8035
NSN 5960-01-250-1095
NSN 5996-00-141-0288
NSN 5999-01-615-7743
NSN 5975-01-543-4933
NSN 5975-00-899-7952
NSN 5855-00-688-9954
NSN 5915-01-006-7821
NSN 6220-01-062-2077
NSN 5855-01-229-3864
NSN 5835-01-527-2629
NSN 6105-00-336-3323