The metal optical cable splice closure is made of aluminum alloy with perfect seal. Having been sealed with sealing ring and silicone, it could be opened, expansed, fixed, and connected repeatedly. This Almunium Alloy Optical Distribution Box offers ideal environment for optical fibers termination and distribution. It features in high mechanical strength, good airtight and anti-corrosive. They are designed to provide a secure and weatherproof enclosure for optical fiber connectors and. Tower Pole use Aluminum Alloy Splice Closure for ADSS OPGW Cable The fiber dome closure OPGW has been developed for using with OPGWs (Optical Ground Wires) for The fiber dome closure OPGW has been developed for using with OPGWs (Optical Ground Wires) for jointing max.