The silicone cowl seal (1/8" × 3" × 9") is an aviation-grade engine baffle sealing strip used to improve cooling efficiency by sealing gaps between engine baffles and the aircraft cowling. It is made from high-temperature silicone rubber and typically includes a fiberglass-reinforced center layer for increased durability and tear resistance.

This material is commonly used in general aviation piston aircraft engine compartments where it helps direct airflow through the cylinders, improving engine cooling performance and efficiency during operation.

Key features include:

Aviation engine baffle / cowl sealing strip
High-temperature silicone rubber construction
Fiberglass reinforcement layer (“F” / mat insert) for strength
Designed to withstand engine compartment heat cycles (-80°F to +425°F typical range)
Improves cooling airflow efficiency by sealing baffle gaps
Resistant to oil, fuel vapor, and environmental exposure
Flexible for forming tight bends around engine cowling
Used in general aviation piston engine installations
Available in multiple colors (blue, red, black – material is identical)
Meets typical aviation baffle seal material standards (AMS/MIL-spec dependent)