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 6320-00-422-9006
NSN 5950-01-426-8810
NSN 5950-01-498-5212
NSN 6240-01-323-6512
NSN 5835-01-464-7038
NSN 6650-01-473-3725
NSN 6145-01-049-7503
NSN 5999-01-544-1349
NSN 6610-01-358-7582
NSN 5960-01-505-2426
NSN 5990-01-565-2226
NSN 6240-01-422-9715