-It is made of synthetic rubber and has superior ozone resistance, cold resistance and durability. It is produced by using presses with high pressure in special molds for each standard, so it has high waterproof reliability and adopts compression vulcanization system which is a method of producing elastic support Which is excellent in adhesion and quality.

-The specially manufactured double pocket waterproof coupling is applied between split products to completely block water leakage, and the connection stiffener is used to achieve more durable waterproofness.

-As the waterproof coupling between the products absorbs the vibration and shock of the extensible joints caused by passing the wheel, the impact is not transmitted to the entire bridge cross-section.

-By attaching the water expansion index material, it is possible to completely block the leakage between the shrinkage concrete and the expansion joint.

-A segment of 3.6 m can be made to minimize the connection, which is the main cause of leakage, and to place the connection in a lane with low wheel contact.



▶Flatness & Drivability
-The NFJ-A Type has a very flat structure with a minimized discontinuity. Grinding is applied to the upper surface of the fingers so as to maintain flatness and reduce the impact even when the bridge rotation due to unexpected anisotropy and live load is applied. Rubber is attached to absorb the shock.
-With a bolt-type setting device for pre-setting, it can be easily adjusted on the spot and the flatness can be improved.