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 5996-00-957-7923
NSN 5960-01-185-1364
NSN 5945-00-934-9045
NSN 6645-00-411-1130
NSN 5935-01-245-8678
NSN 6220-01-573-1615
NSN 5950-00-637-6131
NSN 6685-00-141-4273
NSN 5945-01-179-7893
NSN 5920-01-562-4779
NSN 5975-01-087-0808
NSN 5960-01-433-7565