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 5990-00-969-5719
NSN 6150-01-513-9757
NSN 6610-01-123-7292
NSN 6150-01-108-1082
NSN 6320-01-554-0901
NSN 6650-01-259-9234
NSN 6130-00-917-5198
NSN 5920-01-644-0973
NSN 5930-01-410-7759
NSN 4140-01-144-9520
NSN 6650-01-272-3727
NSN 6610-00-935-7131