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 5960-00-470-2570
NSN 5998-00-014-1035
NSN 5855-01-335-8907
NSN 6620-01-567-4193
NSN 5950-00-100-6737
NSN 6150-01-649-4045
NSN 5998-01-431-1437
NSN 5985-00-972-1965
NSN 5999-01-438-9563
NSN 6645-00-842-4653
NSN 5990-01-129-7701
NSN 2925-00-620-7757