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 6220-00-076-0428
NSN 5930-01-657-2525
NSN 5835-01-552-3153
NSN 5895-01-588-5516
NSN 5999-01-376-3153
NSN 5950-01-467-3682
NSN 6240-01-322-3055
NSN 5930-01-553-0014
NSN 5895-00-027-9888
NSN 5960-00-078-9500
NSN 5945-01-022-7784
NSN 6650-00-009-9510