Seal connections tightly with this O-ring, part number 630740, for select Kohler, Bolens, Craftsman, MTD, Murray, Snapper, Tecumseh, Toro, Cub Cadet, Lawn Boy, Simplicity, American Yard Products, Gladiator, or Lauson Lawn Mower, Small Engine, Snowblower, Tiller, Pressure Washer, String Trimmer, Edger, Chainsaw, or Wood Chippers.