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 6610-00-186-9180
NSN 6620-01-574-1862
NSN 5945-01-200-7300
NSN 5930-01-623-8154
NSN 4140-00-332-5956
NSN 5920-01-068-3135
NSN 5920-01-607-4346
NSN 5999-01-073-5869
NSN 5930-01-253-0642
NSN 6240-01-089-3827
NSN 5999-01-100-0464
NSN 5985-01-617-4424