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 5985-00-752-3222
NSN 6105-01-384-3687
NSN 5985-00-224-5615
NSN 6150-01-305-4787
NSN 4140-01-133-4562
NSN 5975-01-155-0136
NSN 6110-00-596-9124
NSN 5960-00-398-1029
NSN 5990-00-150-6979
NSN 5998-01-420-6620
NSN 6645-00-229-1521
NSN 6240-01-555-8649