Material: acrylic polymer. Flexible and Elastomeric Resins The BASF Forward AM Ultracur3D ® FL/EL product line offers a range of reactive urethane photopolymers that enable the printing of parts with exceptional flexibility and high tensile strength. Combined with reduced post-processing due to the elimination of thermal post-curing, this allows for a wide range of elastomer applications at low cost. Ultracur3D ® EL 4000 Flexible resin with superior strength, rebound, and high hardness (Shore 90 A) Advantages: High hardness (Shore 90 A) High green strength, ideal for printing intricate flexible parts Superior strength, rebound, and tear resistance Application examples: Footwear Bike saddles Cushioning pads