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 5960-01-390-7236
NSN 5950-00-497-0721
NSN 5990-00-173-9401
NSN 6145-00-705-6679
NSN 6650-00-862-2142
NSN 6145-01-401-3713
NSN 6105-01-421-3598
NSN 5920-00-919-8520
NSN 5950-01-356-9286
NSN 5835-01-485-0210
NSN 6610-00-661-1797
NSN 5960-00-307-9919