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 5915-00-518-1644
NSN 6110-01-488-5498
NSN 6105-01-161-1657
NSN 5950-00-202-5861
NSN 6645-00-276-1123
NSN 5915-00-908-3140
NSN 5910-00-285-6400
NSN 6105-01-493-8690
NSN 6650-00-226-7099
NSN 6105-01-084-1445
NSN 6145-01-372-5284
NSN 5996-01-147-6054