Fiber Splice Protectors

Marathon Fiber Splice Protectors are a heat shrinkable polyolefin tubing system with a steel rod for mechanical protection and a hot fusion insert for sealing. This protector provides mechanical reinforcement at the joint point and maintains the optic transmission properties of the fiber optic cable.

Features & Benefits

  • Retains optic transmission properties of optical fiber
  • Reinforces and protects fiber optic splice
  • Clear sleeve for easy inspection and minimizing damage during installation
  • One piece design with hot fusion insert for sealing against moisture and other contaminants
  • RoHS compliant halogen free, environmentally friendly

Temperature Range

  • Operating Temperature: -55°C to 100°C
  • Shrink Temperature: 120°C


  • Sleeve: Transparent
  • Fusion insert: Transparent

Ordering Information

Product CodeSplice Protector O.D. after recovery (mm)Splice Protector Length (mm)Fusion Tube I.D. (mm)Fusion Tube Length (mm)Steel Rod O.D. (mm)Steel Rod Length (mm)Standard Package (pcs/pack)
MARFSP40M 2.5401.3401.236100
MARFSP60M 2.5601.3601.2 55100