Lee Spring's LeeP plastic composite springs are molded from SABIC Innovative Plastics’ durable Ultem brand resin. Using high-performance, engineered plastic, LeeP compression springs offer improved properties including high strength-to-weight ratio, lack of magnetic interference, corrosion resistance and chemical compatibility, and dielectric insulation for nonconductive applications. Thermoplastics approach the strength of metal while offering heat stability, insulation, inertness, low flame toxicity, and recyclability. In marine applications, LeeP resin springs resist salt water and extend life. Springs also are suitable for aerospace products and vehicle interiors. LeeP composite springs are stocked in various standard sizes and strengths with different levels of fiber reinforcement and offer mechanical stability up to 170°C (338°F).