Vibrant Performance Aramid Reinforced Silicone Hump Hose Couplers help compensate for expansion, movement and vibration and reduce the chance of your hard pipes becoming disconnected or damaged. Our Hump Hose Couplers 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). Suitable for Water, Coolant and Air service only.