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 6130-01-501-6390
NSN 5835-00-918-3720
NSN 6150-01-502-4957
NSN 6610-01-365-7796
NSN 6220-00-528-7752
NSN 6320-01-072-2073
NSN 6620-01-039-5468
NSN 6220-01-398-7372
NSN 5999-01-661-0227
NSN 5915-00-600-6393
NSN 6240-01-359-2721
NSN 6135-01-079-7852