Silicone Gel Insole Liquid Rubber for Medical Grade Foot Soles Making. Medical Grade Safety: Food grade, non-toxic, odorless, and environmentally friendly for foot sole applications. Wide Temperature Resistance: Resists extreme temperatures from -60 to 200 degrees Celsius without deformation. Low Shrinkage Rate: Shrinkage rate is less than or equal to 0.1 percent for high precision molding. Adjustable Hardness: Hardness is adjustable using silicone oil to meet specific customer requirements. Fast Delivery: Delivery time is within 4 to 6 days after payment confirmation. Long Shelf Life: Product maintains quality for 18 months in original unopened packaging. High Chemical Resistance: Excellent resistance to acid, alkali, aging, and aggressive resin components. Professional R&D Support: Backed by a professional team with 2 dedicated R&D engineers.