Clean the surface of the cylinder to remove any deposits and old decals. On painted aluminum cylinders we recommend scraping any blistering or peeling areas to remove loose paint. Most adhesive remnants are easily and safely removed with Goo Gone. If you use any cleaning solvent, keep it off the valve and neck; be sure to rinse with soap and water when you are done. Once the cylinder is clean, peel the backing off your decal, lightly wet the adhesive back with soapy water, and apply the decal to the cylinder. While wet, the decal can be perfectly positioned then allowed to dry. Once the soap evaporates, the decal adheres very well.