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 6685-01-634-0611
NSN 6130-00-730-5355
NSN 5965-01-056-7225
NSN 5965-00-139-4870
NSN 6220-00-573-7385
NSN 5975-00-518-1733
NSN 5998-01-274-2389
NSN 5985-00-216-7057
NSN 5925-01-555-8524
NSN 6650-00-259-2605
NSN 6150-00-753-3950
NSN 5915-00-283-1664