Soft Tube Filling Compound is used in filling, buffering of loose tube and direct laid fibres in slotted core and ribbon designs of optical fibre cables. The Tube Filling Compound is also suitable for certain designs of OPGW cables. The Tube Filling Compound is a soft, non-melting, translucent and water barrier compound. Soft Tube Filling Compound is based on synthetic and aliphatic hydrocarbons.