HF D75 Silane Terminated Polyether Polymer HF D75 is a high-strength STP polymer developed for industrial bonding and sealing applications that require excellent adhesion, durability, and long-term reliability. Produced by Risun, this polymer combines high mechanical performance with stable curing behavior, making it suitable for a wide range of industrial adhesive formulations. Key Features Medium to high strength hybrid polymer formulation Reduced bubble formation during