GJST series provide with 6 or 4 fiber cable in-out ports; It is applied for the cable whose diameter is 10-20 mm, they can be used in aerial,duct, and direct buried application; The products are made of the high quality material and with the mechanical sealing structure filled with the sealing material, can be used in the harsh weather; The external components and fastening parts are all made of stainless steel; It can be reopened and reused without changing sealing material.