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 5990-00-283-1324
NSN 5999-01-373-8241
NSN 5945-01-395-2310
NSN 6145-00-798-4831
NSN 5965-01-179-5847
NSN 6650-01-174-0928
NSN 6150-01-411-6289
NSN 2925-01-643-8395
NSN 6110-00-483-9247
NSN 6240-00-004-2516
NSN 5930-01-286-5853
NSN 6130-01-350-7032