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 5925-00-957-1932
NSN 5895-01-551-1282
NSN 5905-01-648-6355
NSN 4140-00-229-8467
NSN 6685-00-759-9801
NSN 5925-01-565-0431
NSN 5905-00-707-4696
NSN 5975-01-454-5607
NSN 6110-01-023-9562
NSN 6105-01-493-8551
NSN 6130-01-161-0764
NSN 6130-00-173-6062