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 5990-00-369-5212
NSN 5999-01-311-1892
NSN 5996-00-880-3574
NSN 6645-01-600-2080
NSN 6110-01-317-4286
NSN 6650-01-481-8009
NSN 5975-01-104-0797
NSN 6645-00-960-6594
NSN 6135-00-862-5736
NSN 5999-01-507-2409
NSN 6610-01-458-3119
NSN 6145-00-542-7980