The transparency of silicone is best described as "translucent" compared to some organic thermoplastic plastics. The result is that silicone elastomers for the production of hoses are made of silicone polymers and amorphous silica. Since the two materials have different refractive indices and do not have a specific blending method to match them, all silicone tubes are translucent.
After curing, silicone elastomers exhibit significant mechanical properties, including medium hardness and high elongation at break, but lower tensile strength than polyurethane (PU). Compared with PTFE (PTFE), they have a sticky surface and a higher coefficient of friction, but much less rigid.
Because of their hydrophobicity and excellent electrical insulation, they attract dust. Their operating temperature range is larger than that of polyvinyl chloride (PVC).