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 6130-01-526-0554
NSN 5935-00-528-2185
NSN 2925-01-327-3069
NSN 5835-01-057-5827
NSN 5999-01-142-7151
NSN 6150-01-112-0540
NSN 5945-01-546-8781
NSN 5990-01-448-2751
NSN 5935-00-141-0540
NSN 5920-00-976-3076
NSN 6150-01-111-2884
NSN 6130-00-005-0271