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 6620-01-256-9703
NSN 5998-00-952-3008
NSN 6135-01-205-5965
NSN 6105-01-022-7477
NSN 6610-00-805-0021
NSN 6220-00-866-6887
NSN 6650-01-387-1740
NSN 6110-00-458-2083
NSN 7035-00-009-0099
NSN 5895-01-338-8974
NSN 5950-01-589-2148
NSN 6145-00-286-9588