Vibrant Performance Aramid Reinforced Silicone 45 Degrees Transition Elbows feature High Temperature Resistant Aramid Reinforcement Fabric between each layer of silicone which allows for an impressive Operating Temperature Range of - 75 Degrees F to 392 Degrees F ( - 60 Degrees C to 200 Degrees C). These elbows are intended for use in applications where pressurized tubing and connection points require a tight radius bend and size transition to accommodate the installation of piping in limited space. Not suitable for use with OilFuel.