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 2925-00-155-2100
NSN 6110-00-647-3932
NSN 6610-01-207-0045
NSN 5935-00-707-1168
NSN 5920-01-157-9471
NSN 5895-01-437-6740
NSN 6220-01-514-7024
NSN 5945-01-480-2879
NSN 5960-01-398-9538
NSN 5920-00-003-5845
NSN 5945-00-615-9218
NSN 6650-00-011-3435