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 6145-00-244-4565
NSN 5945-01-241-9835
NSN 5996-00-399-0731
NSN 5945-00-783-1050
NSN 6135-00-990-1822
NSN 5910-00-890-0656
NSN 5910-01-645-4983
NSN 6240-00-072-9966
NSN 5950-00-635-9746
NSN 6110-01-364-0966
NSN 7035-00-616-4410
NSN 5930-00-339-3451