1. Viscosity
Explanation of scientific terms: The volume characteristics of liquid, quasi-liquid or quasi-solid material that resist flow, that is, the internal friction or internal resistance to flow between molecules when they flow under the action of external forces. Normally viscosity and hardness are directly proportional.

2. Hardness
The ability of a material to locally resist hard objects pressing into its surface is called hardness. Silicone rubber has a Shore hardness range of 0 to 80, which gives designers complete freedom to choose the required hardness to best achieve a specific function. Various intermediate hardness values can be achieved by mixing different proportions of polymer base material, fillers and additives. Likewise, the time and temperature of heat curing can also change hardness without destroying other physical characteristics.

3. Tensile strength
Tensile strength is the force required per unit of range to cause a sample of rubber material to tear. The tensile strength range of hot vulcanized solid silicone rubber is between 4.0-12.5MPa. The tensile strength range of fluorosilicone rubber is between 8.7-12.1MPa. The tensile strength range of liquid silicone rubber is between 3.6-11.0MPa.