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 6110-01-633-9660
NSN 6105-00-316-3833
NSN 5935-01-202-8515
NSN 6135-01-317-6021
NSN 5835-01-070-6750
NSN 5920-00-493-8307
NSN 5925-01-618-2646
NSN 6610-01-078-9238
NSN 5998-01-250-2461
NSN 5935-01-056-3341
NSN 6240-00-880-1893
NSN 6685-01-012-1018