PVC vacuum hose is heavy duty, wire reinforced wall and clear, allowing user to have full visual flow of material. Meets FDA standards. Maximum working temperature 150°F. Suitable for food and general purpose uses.NOT for chemical or acidic applications. (see our Tygon vacuum hose for these uses). Clear mirror smooth inside reduces material build-up. Easily sterilized. Vacuum rate in/Hg. is 29.5