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 5895-01-495-3631
NSN 6105-00-922-8597
NSN 5985-01-121-0140
NSN 6150-00-252-7699
NSN 5945-00-917-3605
NSN 5950-00-430-5349
NSN 5985-01-044-4530
NSN 6150-01-605-1343
NSN 5920-00-594-3124
NSN 6620-00-221-7608
NSN 6240-00-822-4571
NSN 5930-01-590-3521