Carbon rim cement for tubulars was specifically designed for increased thermal strain and the particular properties of the surface of carbon. The unfavourable heat dissipation of carbon softens conventional cement, particularly during long descents, which means that the tyre may become detached from the rim. The carbon cement, which has been especially developed for carbon rims, remains hard even at high temperatures. Please Note: It is essential to pay attention to the application instructions for carbon rim cement! Special Tub Glue for carbon rims. Carbon Rims = Black Tube. Package content: 25g tube. Maximum safety is achieved with high adhesive strength and good processability, the most important aspect of cemented tyres. The classic bead guarantees a perfect fit and the application is conventional.