... water or air to leak inside the cabin,7>silicone tube has good chemical resistant,Weather&temperature resistant ... appearance in flexibility Anti-aging, antiradiation. Material:100% silicone Feature avirulent insipidity CertificateCE,SGS Shape square, round, customized ... It can be manufacture highly transparent,semitransparent,milky white,large and small inside diameter,thin and thick sleeving wall ...