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 5835-01-495-0595
NSN 5920-01-474-3593
NSN 5960-01-411-5899
NSN 5945-00-276-9261
NSN 5835-00-247-0161
NSN 6130-00-198-4997
NSN 6105-00-232-1410
NSN 5950-00-611-6562
NSN 5965-01-593-5143
NSN 5975-00-527-9656
NSN 5998-01-424-6102
NSN 2925-01-363-5978