Mylar Seals for Gliders Mylar, Glider, Seals are thin, flexible strips of polyester film. They cover gaps between a glider’s fixed and moving control surfaces, such as ailerons, flaps, elevators, and rudders. These seals help maintain smooth airflow and reduce drag, thus improving aerodynamic performance. Key Benefits: Reduce aerodynamic drag by sealing hinge gaps Improve glide ratio and flight efficiency Enhance control surface response for better handling Lightweight and flexible – won’t affect aircraft weight Why Mylar, Glider, Seals Are Important: Hinge gaps allow high-pressure air from beneath the wing to leak to the top, disrupting airflow Airflow disruption can cause: Increased drag Reduced lift efficiency Less effective control surfaces Mylar seals prevent these issues and allow control surfaces to move freely Maintenance Tips: Regularly inspect for: Cracks or tears Delamination or curling edges Dirt, grease, or other contamination Replace worn or damaged seals to maintain optimal performance Applications: Suitable for recreational and high-performance sailplanes Essential for ailerons, flaps, elevators, and rudders Durable, lightweight, and easy to install, Mylar seals are a simple and effective upgrade for any glider. Keep your sailplane performing at its best with properly maintained hinge gap seals. Browse our glider care products, including tapes, cleaners, and maintenance supplies.