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 6650-00-272-2271
NSN 6620-00-407-0102
NSN 5855-01-138-4985
NSN 6135-01-400-2947
NSN 5950-01-158-6865
NSN 6135-00-728-9860
NSN 5996-01-541-8989
NSN 7035-01-381-7622
NSN 6620-01-047-5831
NSN 6650-00-011-3435
NSN 5990-00-016-5648
NSN 5990-00-060-2321