An 11.0 mil. polyester backing tape with #200 hi-performance acrylic adhesive primarily used as a spacer for membrane switch/ keyboard circuits. Solvent resistance is excellent when this product is properly applied to impervious materials. The adhesive resists softening through edge contact with mild acids, alkalis, oil, gasoline, Kerosene, JP-4 fuel and many other solvents. Total tape immersion in chemicals and solvents is not recommended. The bond strength is dependent upon the amount of adhesive-to-surface contact developed, firm application pressure develops better adhesive contact and therefore improves bond strength. Initial tape application below 50°F is not recommended because the adhesive becomes too firm to adhere readily. However, once properly applied, low temperature holding is generally satisfactory.