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 5996-00-265-6573
NSN 5935-01-503-6753
NSN 6240-00-170-5302
NSN 4140-00-764-5287
NSN 6145-00-010-5135
NSN 6145-01-006-2845
NSN 6220-01-339-2805
NSN 5935-01-113-8315
NSN 6650-01-227-1632
NSN 5930-01-590-2118
NSN 5960-01-628-2760
NSN 6110-00-115-2924