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 5945-00-604-6805
NSN 6620-01-611-3511
NSN 6110-00-789-5594
NSN 6320-01-495-0512
NSN 6135-01-222-0703
NSN 4140-01-166-6767
NSN 2925-01-421-0068
NSN 6645-01-089-6459
NSN 5965-00-864-8046
NSN 6105-01-492-6547
NSN 6135-01-252-0315
NSN 5855-00-149-0766