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 5920-01-393-4988
NSN 6135-01-430-3119
NSN 6320-01-209-0952
NSN 5999-01-561-5983
NSN 5960-00-942-7194
NSN 5996-00-882-0791
NSN 6650-01-237-1105
NSN 6110-01-355-4536
NSN 5960-01-138-3337
NSN 6240-01-008-7030
NSN 5950-01-087-8872
NSN 5999-01-160-6525