Seismic joint system for joints up to 1000 mm subject to high movements up to +/ – 950 mm, specially designed for base isolated buildings. Suitable for loads by cars. The system consists of a rectangular section devoid of underfloor brackets and visible screws. Central plate rigid and antislip, made of knurled aluminium. Gaskets made of rubber with high resistance to vertical loads. The system supports the movement in 3 directions, a special system of sliding on rollers allows longitudinal movements.