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 6685-01-314-8568
NSN 6110-01-380-4380
NSN 5935-01-029-4074
NSN 5835-00-833-7080
NSN 6105-01-154-5568
NSN 5930-01-179-9740
NSN 6135-01-625-0765
NSN 6135-01-008-4595
NSN 5930-01-144-5416
NSN 6685-00-252-3057
NSN 5905-00-099-4967
NSN 6150-00-596-9882