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 6610-00-826-7235
NSN 6240-00-101-9339
NSN 6145-01-125-6361
NSN 5835-00-111-3419
NSN 5950-00-524-0375
NSN 5835-00-870-7034
NSN 5985-00-529-0093
NSN 6150-00-877-3954
NSN 5920-01-421-4930
NSN 6105-01-523-9665
NSN 6240-01-095-5421
NSN 5998-01-620-7415