Sure Seal’s frac-sand trailer package includes a full line of dry bulk trailer components. These Sure Seal trailer products are designed to ensure that transfer of sand in the hydraulic fracturing process is completed efficiently. Examples include Hopper Tees, which are designed with a low-profile configuration to provide greater ground clearance for tough applications while Aeration Systems allow more air to get through the hopper wall, resulting in 20% to 50% faster product unloading times. The LM Series Manholes are designed to handle working pressures up to 30 psi and Butterfly Valves eliminate twisting of the stem and give direct disc control of full or partial product flow.