Silicone polyester masking tape is used for high-temperature masking, especially in powder coating, electrocoating (ecoating), and chemical milling, because its polyester film is strong and chemical-resistant, while the silicone adhesive provides strong, clean removal without residue, even aer exposure to high heat (up to 200°C+). It creates sharp paint lines, protects surfaces from damage (scratches, chemicals), and is used in electronics, automotive, and aerospace for insulation, splicing, and general protection.