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 5996-01-510-5431
NSN 6135-00-491-9864
NSN 5996-01-605-0950
NSN 5965-01-007-9757
NSN 6130-00-913-9906
NSN 5996-01-223-5896
NSN 5925-01-248-1384
NSN 6610-00-073-4581
NSN 5950-01-469-0669
NSN 5965-00-729-6835
NSN 6105-00-479-9001
NSN 4140-00-375-6021