Improves engine cooling; prevents deterioration from fuel and oil by replacing the engine baffle gasket material on your aircraft. 3" x 9 ft. roll can be cut and trimmed for multiple uses. Handles temperatures up to 550 degrees F. Meets Federal Spec. AMS3320 or AMS-3783. Manufactured to MIL-I-16411E. Material has fiberglass mesh for reinforced strength and is better suited for wider openings.