Features: 1) Consist of cross linked polyolefin, hot fusion tubing and stainless reinforcing steel rod 2) Keep optic transmission properties of optical fiber 3) Provide strength and protection to optical fiber splices 4) Easily use and avoid any damages to the optical fiber during installation 5) Clear sleeve make it easy to detect splice before shrinkage 6) Sealing structure make the splice free from effect of temperature and humidity from environment 7) Operating temperature: -45