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 6135-01-576-9616
NSN 5975-00-177-6408
NSN 5835-00-217-2147
NSN 6240-00-594-7138
NSN 6110-01-595-7333
NSN 5965-00-583-4865
NSN 5985-01-518-4653
NSN 5930-01-462-2516
NSN 6620-01-198-9448
NSN 6135-01-286-9563
NSN 5895-00-732-9204
NSN 5998-01-398-1873