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 5915-01-547-4655
NSN 5990-01-577-2120
NSN 5905-01-345-0147
NSN 5985-01-341-6991
NSN 6105-00-284-1673
NSN 6685-01-425-1719
NSN 5999-01-634-0576
NSN 5985-00-324-2963
NSN 5945-01-091-9536
NSN 5895-01-344-0277
NSN 6320-01-192-0332
NSN 5960-01-325-2241