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 6610-01-186-4106
NSN 6145-01-626-6521
NSN 6135-00-967-3112
NSN 6150-01-570-0555
NSN 6150-00-153-3196
NSN 2925-01-550-0177
NSN 5930-00-835-7076
NSN 5915-00-312-8011
NSN 5910-00-269-3339
NSN 6105-01-421-2644
NSN 6685-01-543-7627
NSN 5998-01-566-0154