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 6110-01-048-2414
NSN 5925-01-445-9611
NSN 6645-00-527-7258
NSN 5950-01-657-9469
NSN 5996-00-997-3852
NSN 5920-01-455-1074
NSN 5930-00-980-7617
NSN 6130-01-376-9325
NSN 5990-00-001-4570
NSN 5835-00-816-0394
NSN 4140-00-846-4786
NSN 5910-01-330-7294