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 6130-00-381-1927
NSN 6620-00-153-6291
NSN 6320-01-582-6668
NSN 5835-00-546-4898
NSN 6610-00-999-1528
NSN 5910-00-021-9415
NSN 5999-00-290-5898
NSN 5835-01-276-2808
NSN 5985-00-661-2263
NSN 5905-01-326-7934
NSN 6105-00-222-2516
NSN 6610-01-597-2911