The invention provides a rod packing that is capable of minimizing the leakage of a fluid, by fully maintaining its contact state with a shaft at a shaft seal part even when the rod packing abrades and even when it expands/contracts due to a temperature change. In one surface of a ring member, a plurality of incision grooves incised in a radial direction from an inner peripheral edge up to an appropriate position and those incised from an outer peripheral edge to an appropriate position are alternately formed, and in the other surface, incision grooves continuing from the inner peripheral edge up to the outer peripheral edge are formed. In order to adapt to the expansion and the contraction due to a temperature change and a change in shape and dimension due to abrasion, the inner incision grooves and the outer incision grooves increase/decrease in width, causing the packing to expand/contract in the circumferential direction, so that the rod packing is capable of maintaining its