The invention discloses a leakage-free seal-ring-free two-way controllable
magnetorheological damper which comprises a cylinder body, a
piston and a
piston rod, wherein the left end and the right end of the cylinder body are respectively connected with a left corrugated
pipe and a right corrugated
pipe hermetically, the left corrugated
pipe is hermetically connected with a left end cover, the left end cover and a right end cover are hermetically connected with the
piston rod, the left corrugated pipe and the right corrugated pipe are hermetically connected with the left end cover and the right end cover, and the centers of the left end cover and the right end cover are hermetically connected with the
piston rod; a communicating pipe is arranged on the cylinder body; a left
circular coil and a right
circular coil are fixedly connected inside the cylinder body, and gaps between the inner holes of the circular coils and the
piston rod form a damping channel; and a left one-way valve and a right one-way valve are arranged on the communicating pipe, and the
piston rod is located between the left one-way valve and the right one-way valve. In the invention, the corrugated pipes are used as sealing elements, leakage caused by wearing between the piston rod and a seal ring is avoided, and the corrugated pipes do not bear
working pressure. The
damper can not leak within the service life of the corrugated pipes.