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 6610-00-872-7600
NSN 5920-01-349-7190
NSN 4140-00-001-8404
NSN 5998-01-016-0961
NSN 6620-01-390-9551
NSN 6620-00-041-3406
NSN 6110-00-908-0196
NSN 6620-01-081-1042
NSN 6145-00-170-6467
NSN 6220-01-614-5104
NSN 5999-01-641-1072
NSN 6610-01-096-8746