WATERPROOF SCREW, SEAL MATERIAL, STRUCTURE INSTALL METHOD, AND STRUCTURE INSTALL STRUCTURE

摘要

A waterproof screw comprises a screw member further comprising a head part and an axle part, and a seal material which covers the circumference of the axle part. In the seal material, the stickiness of the surface on the side away from the axle part in the radius direction is lower than the stickiness of the surface on the side toward the axle part in the radius direction, and a storage shear elasticity (G') at 25°C which is measured at 1Hz in the side toward the axle part in the radius direction is 50,000Pa or less.