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 5990-01-060-3687
NSN 6320-01-607-2978
NSN 6240-01-444-2227
NSN 5950-01-426-3182
NSN 6610-01-600-5789
NSN 5855-01-634-0259
NSN 5990-01-128-3758
NSN 6650-00-498-2416
NSN 5996-01-470-1404
NSN 6650-00-336-0753
NSN 6105-01-605-1447
NSN 6650-01-317-2101