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 6150-01-477-6342
NSN 5950-01-046-0387
NSN 6650-01-514-0240
NSN 6150-01-214-4742
NSN 6135-00-643-4843
NSN 6110-01-497-5827
NSN 5996-01-615-1195
NSN 5935-01-175-8419
NSN 5999-01-563-7527
NSN 6145-00-782-4420
NSN 5998-00-020-3948
NSN 2925-00-999-8967