RS PRO Acrylic Resin Impregnated Braided Fibreglass Cable Sleeving. From RS PRO a high-quality Class F braided fibreglass cable sleeving or cable tubing impregnated with an acrylic resin to create a tough but flexible insulation material that offers highly effective cable protection. This cable sleeving has excellent chemical resistance along with a good temperature resistance and high electrical and mechanical strength.