Central loose tube cable contains one tube with 2 - 24 fibers, which is filled with water blocking gel. Either aramid yarn or fiber glass is wound around the tube to provide physical protection and tensile strength. Armor options include all-dielectric, aluminum. This cable is characterized by light weight and small diameter, suitable for both aerial and duct installation. America Tech Supply carries the entire line of AFL Loose Tube Fiber Cable, Aerial Loose Tube Fiber Cable, Direct Bury Loose Tube Fiber Cable, Loose Tube Armored Cable, Dielectric Self Supporting Cable,AFL ADSS Cable, and Loose Tube Fiber Optic Cable. The FIBER OPTIC cable can also be used for direct burial for armoured option. Sensing & Monitoring Solutions based in Optical Fibre We have product quality certificates UL.