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 5920-01-612-2974
NSN 5920-00-778-7313
NSN 5835-01-303-6563
NSN 5920-01-588-0778
NSN 6240-00-215-8550
NSN 2925-00-347-7893
NSN 7035-01-107-2811
NSN 6105-01-329-7405
NSN 5996-01-371-4182
NSN 6130-00-844-0147
NSN 5935-01-350-8497
NSN 6220-00-101-8799