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 6240-00-853-3576
NSN 5999-01-384-3532
NSN 6320-01-162-5977
NSN 5975-01-379-8636
NSN 6685-01-469-3137
NSN 7035-01-324-3839
NSN 5945-01-554-8374
NSN 5945-00-042-9442
NSN 5905-01-032-4866
NSN 5950-01-091-5929
NSN 6620-00-612-7743
NSN 6110-01-359-8715