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 2925-00-646-6099
NSN 5855-01-562-3132
NSN 5998-00-113-8123
NSN 6645-01-495-0939
NSN 6105-00-929-4304
NSN 6645-00-144-4868
NSN 5985-01-388-4057
NSN 5930-00-204-0471
NSN 5945-01-214-3454
NSN 6130-01-642-4281
NSN 6150-00-596-9882
NSN 5935-00-504-5968