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 4140-01-219-4754
NSN 6145-00-848-7581
NSN 2925-01-603-0186
NSN 6110-01-063-8309
NSN 5895-00-855-3161
NSN 5920-01-461-8719
NSN 5999-01-586-0059
NSN 5935-00-088-2379
NSN 6220-01-069-3685
NSN 5925-01-041-6342
NSN 6240-00-087-6684
NSN 5985-00-371-3093