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 5855-01-144-4837
NSN 2925-00-816-8765
NSN 6105-00-109-3633
NSN 5998-01-159-4483
NSN 5920-00-925-2639
NSN 5999-01-488-4029
NSN 5945-01-157-2771
NSN 5945-00-165-0911
NSN 6320-00-110-8005
NSN 6610-00-018-0683
NSN 4140-01-632-0983
NSN 5985-01-419-5010