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 5895-01-468-0322
NSN 5965-00-372-2537
NSN 5895-01-485-1017
NSN 4140-00-146-3269
NSN 6145-01-379-6123
NSN 5950-00-938-8532
NSN 6220-01-641-1319
NSN 5905-01-145-4552
NSN 5945-00-725-3990
NSN 5920-01-532-9897
NSN 5990-01-605-4769
NSN 6145-00-674-1807