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 5855-01-130-1501
NSN 6320-01-233-5798
NSN 5999-00-558-7305
NSN 5945-01-283-6531
NSN 5950-01-411-6227
NSN 5965-01-174-6995
NSN 5950-00-499-8958
NSN 6650-01-347-6785
NSN 4140-00-933-9401
NSN 5950-01-615-6587
NSN 5998-00-427-7845
NSN 6130-01-411-4849