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 5835-01-537-1228
NSN 5935-00-049-0927
NSN 6145-01-239-3638
NSN 6645-01-058-6260
NSN 6130-00-975-4007
NSN 6645-01-238-7419
NSN 6620-01-234-1799
NSN 5985-01-646-7976
NSN 5855-00-916-2236
NSN 5950-01-388-2847
NSN 5835-00-289-9080
NSN 5990-01-612-5323