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 5945-00-300-3931
NSN 5920-01-483-1196
NSN 5990-00-713-9016
NSN 6650-01-114-9514
NSN 5945-00-834-5430
NSN 6220-00-368-4945
NSN 5945-01-573-6488
NSN 6135-01-648-4875
NSN 2925-00-371-2285
NSN 6685-01-145-3938
NSN 6240-01-459-6965
NSN 5920-01-287-8409