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 5960-01-244-6610
NSN 6150-01-583-9360
NSN 5930-00-957-7484
NSN 4140-00-802-2968
NSN 6105-01-041-8698
NSN 6110-01-642-7212
NSN 6145-01-501-0996
NSN 5985-01-408-8322
NSN 6145-00-170-6467
NSN 5990-00-263-1289
NSN 6645-01-305-1124
NSN 6620-01-058-2161