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 6650-01-183-0711
NSN 5965-01-516-1236
NSN 6110-00-518-2998
NSN 5999-00-004-7768
NSN 5950-01-142-2634
NSN 5965-01-479-0744
NSN 5960-00-343-2888
NSN 6130-01-398-9131
NSN 5910-01-447-9086
NSN 5835-01-141-4975
NSN 5905-00-278-5764
NSN 5910-00-926-2310