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 5935-01-359-5470
NSN 5998-01-592-1350
NSN 6130-00-833-7763
NSN 6240-01-252-8850
NSN 5999-00-862-5157
NSN 5930-01-220-4646
NSN 5905-01-082-3581
NSN 6620-01-164-9052
NSN 6320-00-036-3688
NSN 5855-01-286-9928
NSN 5855-00-327-2112
NSN 5930-00-230-4980