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 6135-01-017-3001
NSN 5895-01-429-0257
NSN 6610-00-485-6653
NSN 4140-01-655-4888
NSN 5895-00-808-9088
NSN 5905-01-128-8917
NSN 4140-00-751-1694
NSN 5960-00-504-6757
NSN 6110-00-499-9762
NSN 6150-01-633-9324
NSN 5950-00-400-1788
NSN 5905-01-323-7065