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 6110-00-850-2860
NSN 6220-01-483-0435
NSN 6645-01-353-9786
NSN 6610-00-419-3154
NSN 6220-01-103-1104
NSN 5975-01-192-2908
NSN 6130-00-231-0660
NSN 6130-00-226-3149
NSN 7035-00-442-1869
NSN 5950-01-291-7713
NSN 5930-00-388-6758
NSN 5990-00-306-0222