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 5960-01-055-9678
NSN 5915-01-421-0196
NSN 5975-00-156-5737
NSN 6110-01-155-1626
NSN 5895-01-500-2304
NSN 5930-01-008-1486
NSN 5935-01-335-5932
NSN 5996-00-791-0703
NSN 5855-01-528-0304
NSN 4140-00-823-9194
NSN 6150-01-604-9080
NSN 6145-01-655-8955