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 6105-01-470-9956
NSN 6240-00-905-7279
NSN 4140-01-381-3221
NSN 6220-00-080-8472
NSN 5895-00-768-0103
NSN 5945-01-447-3456
NSN 5985-00-432-3289
NSN 5965-00-049-7649
NSN 5915-01-432-0324
NSN 7035-00-270-5519
NSN 5835-01-398-3859
NSN 6105-01-537-5634