PP filler rope is a type of material used in the manufacturing of cables and wires. It is made of polypropylene, which is a synthetic thermoplastic polymer. PP filler rope is commonly used as a filler material to enhance the mechanical strength, insulation properties, and tensile strength of the cables and wires. It is also used as a water-blocking material to prevent water from penetrating the cable. PP filler rope is highly resistant to chemicals and abrasion, making it a suitable material for harsh environments.