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 5960-01-589-6846
NSN 6135-01-008-4595
NSN 5985-01-007-5062
NSN 6110-01-429-5680
NSN 6130-00-554-7852
NSN 5835-00-155-1379
NSN 6145-01-530-5996
NSN 5905-01-105-5232
NSN 6145-01-615-4155
NSN 6105-01-543-0442
NSN 5945-00-895-0676
NSN 5895-00-717-6158