To provide a lubricant feed material which can improve the lubricating performance of a direct acting apparatus such as a ball screw and can improve the sealability and a direct acting device using the same.

The lubricant feed material is a sealing member 6 which lies between the screw shaft 1 of a ball screw and a nut 3 and is slidably in contact with the screw shaft 1, and the sealing member 6 uses a lubricating component and a resin component as essential components and is a solid material obtained by expanding and curing the resin component to provide a porous substance and occludes the lubricating component within the resin, and the above resin component is composed of a resin having rubbery elasticity or a rubber, has the property of leaching the lubricating component due to deformation by external force, and the expansion ratio of the above resin component is 1.1 to 100 times.