Shriram Polytech manufactures Kink-Free Barium Sulphate Radiopaque. Shriram Polytech is an ISO 9001, IS0 14001 and OHSAS 18001 certified company. Kink-Free Barium Sulphate Radiopaque is available in a variety of hardness and opacifier type. These compounds are designed for use as radiopaque striping or to be extruded into catheter tubing. Kink-Free Barium Sulphate Radiopaque is obtained through the incorporation of Barium Sulphate in a non-toxic vinyl base. These compounds are available for kink-free, phthalate-free, radiation free applications.