They can weigh between 60 to 200 kg per kilometer (39. 7 to 132 pounds per 1000 feet), depending on the design and materials used. Universal OFC MLT: GLASS YARNS + CST + LSZH (HIGH TEMP) with 6 gel-free tubes of Ø1. Universal (Indoor/Outdoor) dry core optical fiber Multi Loose Tube cable with glass yarns as strength member, Corrugated Steel Tape (Full Rodent Protected) armor and Low Smoke Zero. 72 Core Fiber Optic Cable GYTY53 Outdoor Armored Double Jacket Waterproof Gel Filled loose tube direct burial is the type of fiber optic cable used to transmit data over is long distance. Normally, the fiber cables are buried underground to minimize the chances of any external damages. Buyers should confirm whether the route is aerial, duct, or direct burial before quotation.