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 4140-00-605-0396
NSN 6320-00-149-7570
NSN 6610-01-485-8973
NSN 6130-00-612-7161
NSN 6150-00-518-2125
NSN 5996-01-020-0567
NSN 6105-01-463-1786
NSN 6320-00-977-3930
NSN 5855-01-354-7291
NSN 2925-01-483-2389
NSN 5950-01-501-5682
NSN 2925-01-344-6073