| Durometer Hardness | Shore A, 40 ** Note: Higher durometer values correlate with stiffer less flexible tubing. | Shore A, 40 ** Note: Higher durometer values correlate with stiffer less flexible tubing. | Shore A, 40 ** Note: Higher durometer values correlate with stiffer less flexible tubing. | Shore A, 40 ** Note: Higher durometer values correlate with stiffer less flexible tubing. | Shore A, 40 ** Note: Higher durometer values correlate with stiffer less flexible tubing. | Shore A, 40 ** Note: Higher durometer values correlate with stiffer less flexible tubing. | Shore A, 40 ** Note: Higher durometer values correlate with stiffer less flexible tubing. | Shore A, 40 ** Note: Higher durometer values correlate with stiffer less flexible tubing. | Shore A, 40 ** Note: Higher durometer values correlate with stiffer less flexible tubing. | Shore A, 40 ** Note: Higher durometer values correlate with stiffer less flexible tubing. |