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 5855-01-236-4497
NSN 6150-00-115-9537
NSN 5996-01-597-1682
NSN 6220-01-496-0539
NSN 5910-00-360-6268
NSN 6220-01-379-3498
NSN 6150-01-335-4185
NSN 6650-01-443-3668
NSN 6105-01-018-3677
NSN 5965-01-424-2941
NSN 6135-00-416-2898
NSN 5975-01-448-9738