TPE stands for ThermoPlastic Elastomers and it describes a class of polymers that are flexible. For 3D printing, filaments are generally divided between TPE and TPU, where TPU is less flexible. Because the definition is not widely used in the same manner, it is best to look at the Shore Hardness for information on the actual elasticity and hardness. Using TPE filament you can 3D print flexible objects. With the really rubber like materials you can print wheels for RC cars for example, while the semi-flexible 3D print filament is great for shock absorbers.
Color: Translucent, but available in many colors
Strength: Very strong
Heat resistance: Minimal, up to 60 degrees
Flexibility: Very flexible
Specialties: Wear resistant
You can print the TPE filaments using any 3D printer, as long as it has a closed filament path from the motor to the Hot End. Any place for the filament to escape will ruin your 3D print. Bowden systems may prove to make printing TPE filament a challenge, so it is recommended to use a direct drive extruder. Generally ABS settings at a low speed are a good start to start 3D printing with TPE filament. This is not a recommended material if you just started 3D printing.