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 6650-01-116-4650
NSN 6150-01-364-0812
NSN 5935-00-956-7330
NSN 4140-01-293-8837
NSN 6145-01-517-1650
NSN 6110-01-633-9660
NSN 5835-01-347-8714
NSN 6240-00-041-5043
NSN 5996-01-106-8903
NSN 6145-01-534-2748
NSN 6135-00-497-0491
NSN 6320-00-841-2279