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 5895-01-348-9889
NSN 5998-01-479-9070
NSN 5996-01-144-1561
NSN 6110-00-101-9821
NSN 6105-01-634-0322
NSN 4140-01-376-3104
NSN 6105-00-295-2558
NSN 6135-00-269-5843
NSN 5975-01-437-8869
NSN 5950-00-222-4639
NSN 6135-00-145-8884
NSN 6110-01-090-0804