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 6645-01-116-3423
NSN 2925-01-055-9705
NSN 6240-01-359-9807
NSN 5835-00-153-4100
NSN 5895-01-062-2684
NSN 6105-00-999-3577
NSN 5990-01-280-0321
NSN 6610-01-412-5776
NSN 5975-01-301-3684
NSN 6645-00-149-1100
NSN 5998-01-095-4304
NSN 5960-01-258-0814