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 5990-00-466-2952
NSN 5965-01-375-5238
NSN 6645-01-187-3704
NSN 5965-01-198-3256
NSN 5925-01-625-9953
NSN 5925-00-877-5754
NSN 5990-01-372-6047
NSN 5999-00-254-5759
NSN 6220-01-540-2161
NSN 5950-00-970-9081
NSN 6240-01-088-7629
NSN 5990-01-632-0969