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 6110-01-590-2810
NSN 6145-00-409-6844
NSN 5990-01-191-1772
NSN 5985-00-226-0420
NSN 5975-01-426-8968
NSN 6610-01-580-6811
NSN 5835-01-537-1228
NSN 6150-00-216-6542
NSN 6110-00-161-0132
NSN 6145-01-538-8466
NSN 5835-00-632-8621
NSN 6685-01-188-7379