ClosedCell Rubber Pipe Insulation, Unslit, Length 1.83, Temp. Range -50 ... ID. 6 to 89mm, thickness 6 to 30m Closed Cell Rubber Pipe Insulation, Unslit, Length 1.83, Temp. Range -50 to ... . 6 to 89mm, thickness 6 to 30m HengBao Insulation Tube is a flexible, closed cell and light weight elastomeric material ... be protected against distruption and rupture. Closed Cell Rubber Pipe lnsulation black color