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 6240-01-256-8132
NSN 6645-01-252-8870
NSN 6220-01-058-6369
NSN 6105-01-406-6694
NSN 6150-00-542-3965
NSN 5975-01-099-4695
NSN 5985-01-029-0960
NSN 6110-01-285-4516
NSN 5855-01-372-4433
NSN 5945-01-082-8735
NSN 5960-00-212-6367
NSN 6620-00-919-0163