When choosing the fiber optic cable jacket, jacket materials should be considered to meet the requirements of outdoor or indoor uses. There are some commonly used jacket materials: Polyethylene (PE), Polyvinyl Chloride (PVC), Polyvinyl Difluoride (PVDF), and Low Smoke Zero Halogen. Selecting the right cable jacket material is vital for durability, fire code compliance, and environmental performance. Below are the most commonly used fiber optic cable jacket materials and their key characteristics: Excellent moisture, abrasion, and corrosion resistance; good electrical and. The outer jackets of fiber optic cables come in different material types, each with its inherent characteristics (varying fire resistance) and suitable usage scenarios. Common outer jacket materials include PE, PVC, PVDF, LSZH, Plenum, and Riser. The rankings follow a clear hierarchical structure. When it comes to fire safety, for instance, a higher rating can be substituted for any lower rating, but the inverse is not true. As an additional note. Plenum-rated (OFNP) fiber cables are made for air-handling spaces, such as above suspended ceilings or below raised floors that circulate heating and cooling air.