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 5998-00-236-1986
NSN 6610-00-227-8846
NSN 6220-00-445-4050
NSN 4140-01-286-2729
NSN 6110-00-310-8709
NSN 6145-00-069-8964
NSN 5950-01-612-9932
NSN 2925-01-397-2495
NSN 7035-01-407-6413
NSN 6645-01-500-0827
NSN 5920-01-395-4209
NSN 5925-01-643-7403