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 6610-01-140-3634
NSN 5996-01-210-9052
NSN 5915-00-204-7925
NSN 5960-01-258-5615
NSN 5996-01-565-7374
NSN 6110-01-528-5573
NSN 6620-01-022-9868
NSN 6645-01-267-1868
NSN 5910-01-302-5941
NSN 2925-00-365-3289
NSN 6240-00-169-6408
NSN 6130-01-534-3801