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 6150-01-386-7570
NSN 6130-01-525-7519
NSN 6610-00-225-9886
NSN 5950-01-425-8652
NSN 5895-01-261-2555
NSN 6105-01-400-2402
NSN 5996-01-306-1349
NSN 5945-01-215-3975
NSN 5910-01-363-8222
NSN 5998-01-094-5953
NSN 6135-00-377-9165
NSN 5998-01-359-9025