Medium wall: good abrasion, kinking and cut protection. 4:1 covers a wide range of applications, high contact pressure. Thermoplastic inner adhesive for protection against external influences and for strain relief. Very good fire protection properties. Resistant to solvents, acids and alkalis. UV and weather resistant. Approved for shipping. MA40 is a medium wall 4:1 shrink tubing with inner adhesive for the optimal protection and insulation of cables and lines in shipbuilding and maritime applications. In addition to good fire protection properties, MA40 offers good UV, weather and salt water resistance.