Stable wire harness sheath

The utility model discloses a stable wire harness sheath comprising a sheath body, two ends of which are provided with sealing strips; limiting mechanisms are arranged at the two ends of the sheath body, each limiting mechanism comprises a clamping ring, a plurality of outer clamping grooves, a plurality of inner clamping grooves, a plurality of bearing assemblies and a plurality of penetrating holes, the outer clamping grooves are formed in the outer wall of the clamping ring in an annular array mode, the inner clamping grooves are formed in the inner wall of the clamping ring in an annular array mode, and the bearing assemblies are arranged on the two sides of the clamping ring respectively. A positioning mechanism is arranged in an inner cavity of the inserting hole. According to the utility model, through the arrangement mode that the limiting mechanism and the positioning mechanism are matched, branch wires of some wire harnesses can be clamped and limited conveniently by using the outer clamping groove