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 6320-00-468-8421
NSN 5905-01-604-0709
NSN 6110-01-039-5444
NSN 5999-01-106-7638
NSN 5915-01-367-2056
NSN 5920-01-053-7566
NSN 5990-00-099-0822
NSN 5985-00-325-8278
NSN 5960-01-254-3541
NSN 5960-00-279-3536
NSN 5855-00-114-4954
NSN 5855-01-020-7982