How to install the silicone clips inside the fiber optic splice closure

Silicone clips in a fiber optic splice closure are installed to seal cable entry and exit points, ensuring protection and strain relief for the fibers.

Preparation

Before installing silicone clips, ensure the work area is clean, dry, and dust-free. Verify that all closure components, including grommets, sealing plugs, and trays, are present and undamaged. Strip the fiber optic cable according to the manufacturer's recommended length, typically around 180 cm, without damaging the internal fibers or buffer tubes.

Installing the Silicone Clips

Open the Closure Base: Release the plastic hoop or latch tab to separate the cover from the base. Remove any pre-installed sealing gaskets carefully to avoid compromising the closure's sealing performance. Select the Correct Grommet: Choose a silicone grommet that matches the cable diameter.

Grommets are available for single or multiple cables and may include plugs for unused ports. Prepare the Cable Surface: Wipe the cable or plug with the provided silicone wipe to ensure smooth insertion and proper adhesion inside the port. Insert the Cable Through the Grommet: Push the cable or plug into the silicone grommet, ensuring the grommet is flush with the port surface.

The orientation and position are critical to maintain a proper seal. Secure the Clip: Position the silicone clip or grommet in the designated port on the closure base. If the closure uses a bracket or v-groove, align the grommet and tighten the bracket screw to lock it in place.

Seal the Remaining Ports: For unused ports, insert silicone plugs to maintain the closure's environmental protection.

Final Steps

Install Fiber Trays: Place the spliced fibers into the splice trays, coiling excess fiber neatly to avoid stress or pinching. Stack trays according to closure capacity, ensuring accessibility for future maintenance. Close the Lid: Reattach the closure cover, ensuring the O-ring is properly seated around the perimeter to maintain a watertight seal.

Check Sealing and Strain Relief: Verify that all cables are secured, the silicone clips are properly seated, and the closure is fully sealed to prevent water ingress or fiber damage. Following these steps ensures that the silicone clips provide effective sealing and strain relief, maintaining the integrity and longevity of the fiber optic network.