Gravity Bond is our BEST SELLING Urethane Adhesive. Good for Solid and Engineered wood flooring, Gravity Bond has been a favorite to our customers for many years. Recognizing the quality and success of the Gravity Bond 9000 and Gravity Bond 9400, we introduced the Gravity Bond 9000 Easy Spread which became an instant success with our customers. Now, after many years on the market, Gravity Bond established itself as a trusted adhesive brand that hundreds of contractors use daily.