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 5950-01-153-0668
NSN 6110-00-042-8365
NSN 5855-01-063-6340
NSN 6220-00-221-5899
NSN 5835-01-535-0948
NSN 6620-01-064-0366
NSN 5985-00-018-7033
NSN 5960-01-443-3067
NSN 6135-01-056-4609
NSN 5855-01-229-3864
NSN 6105-01-530-0032
NSN 5996-00-351-2369