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 5915-01-012-3923
NSN 6150-00-960-4075
NSN 5925-01-591-5365
NSN 6220-00-397-6910
NSN 5835-01-155-8301
NSN 5996-01-484-6719
NSN 6610-00-302-3344
NSN 6105-01-318-2513
NSN 5945-01-065-2854
NSN 5999-00-433-2036
NSN 4140-01-500-1187
NSN 7035-01-056-5350