LF034 Fiber Optic Heat Shrink Tube Splice Protection Sleeve

Designed specifically for protecting fusion and mechanical splices in fiber optic networks, this heat shrink tube provides a durable, sealed enclosure against moisture, dust, and physical impact. Made from high‑quality cross‑linked polyolefin with an inner EVA hot‑melt adhesive layer, it shrinks evenly upon heating to form a tight, corrosion‑resistant jacket around the splice. It ensures stable optical signal transmission and extends joint service life, making it an essential accessory for FTTH, ODN, data centres, and outdoor fibre projects. 

Key Features

• Purpose‑built protection – Safeguards fusion and mechanical splices against moisture, dust, and mechanical stress, ensuring stable signal integrity.

• Premium materials + strong sealing – Cross‑linked polyolefin with EVA adhesive provides gap‑free encapsulation and IP67 waterproof rating.

• Fast, consistent shrinking – Low start temperature, fully shrinks in 10 – 30 seconds – significantly improves on‑site efficiency.

• Versatile compatibility – Works with bare fibre, tight‑buffered fibre, pigtails, and drop cables; supports both single‑mode and multimode.

• Wide environmental tolerance – Operates from –40°C to +125°C, V‑0 flame‑retardant, corrosion‑resistant – ideal for harsh indoor/outdoor conditions.

• Customisable specifications – Diameter, length, colour, and shrink ratio can be tailored to project requirements.

• Globally recognised certifications – RoHS, CE, UL, IEC – ready for export and large‑scale telecom deployments.

  
  

Detailed Technical Specifications

Application Scenarios

Splice protection in FTTH access networks and ODN infrastructure.

Fibre joint sealing in telecom central offices, equipment rooms, and data centres.

Outdoor aerial, duct, and direct‑buried fibre splice closures.

Rural broadband, campus networks, and other mixed indoor/outdoor environments – used in splice trays, termination boxes, and distribution panels.

Ordering info:

• Standard sizes are kept in stock for quick delivery.

• Custom sizes (diameter, length, colour, shrink ratio, branded packaging) are available – please contact our sales team for MOQ and lead time.

Pro-Tips for Successful Installation

• Slide First, Splice Second: Always slide the heat shrink tube onto one side of the fiber cable before stripping, cleaving, and fusing the glass. Once fused, you cannot add the sleeve without breaking the connection. 
• Keep Ends Deburred: Ensure the internal steel rod has rounded, deburred edges. Cheap sleeves with sharp metal edges can slice right through the fiber during the shrinking process. 
• Use Dedicated Ovens: Avoid open flames or standard hair dryers for fiber work. Always use the integrated heating oven built into your fusion splicing machine. This ensures even, calibrated 360-degree heat distribution without blistering the plastic. 
• Inspect the Clear Sleeve: Check for air bubbles, uneven melting, or asymmetric glass placement inside the clear window before placing the cooled sleeve into the splice tray.