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 5910-01-462-0401
NSN 5935-00-383-3535
NSN 6220-01-485-7401
NSN 5855-01-619-9240
NSN 6110-01-094-7661
NSN 5950-00-690-0497
NSN 5960-01-422-3269
NSN 6240-01-192-5590
NSN 5990-01-071-1505
NSN 6645-01-198-5785
NSN 4140-00-505-1684
NSN 6110-01-291-2063