applied for duct piece joint of shield segment tunnel, conduit joint, underground engineering, infrastructure deformation joint, construction joint and settlement joint.

1) Material: EPDM

2) Hardness: 60-70SHA

3) Solid rubber extrusion

4) Porous structure

5) Excellent flexibility and good resistance to aging, chemical medium and ozone

6) Play a good waterproof performance and weather resistant property in a big temperature range

7) Profiles could be designed according to concrete segment structure

8) Customized profiles are available

Products are applied for duct piece joint of shield segment tunnel, conduit joint, underground engineering, infrastructure deformation joint, construction joint and settlement joint.

Main products include shield segment waterproof rubber seal, hydrophilic expansion rubber seal.

Products have been applied in many important projects both in domestic and abroad, such as Beijing subway, Shanghai subway, Guangzhou subway, Korea Drainage Works.

In the process of participating in engineering construction, our company have not only mastered technical capacity of producing shield segment waterproof materials, but also accumulated rich experience on mechanical structure, mechanical conditions and seal mechanism of such products. Our company can design a suitable segment seal gasket through finite element analysis, various stress tests of finished products and water pressure-resistant tests under different conditions in accordance with duct size, force size and watertight indexes provided by the customer