ditec’s rubber expansion joints have a cycle life in the tens of millions. The highly compliant and resilient characteristics make them ideally suited for earthquake, as well as pressure-surge and water hammer dampening. Given the inherent characteristics of natural and synthetic elastomers, they are not subject to fatigue breakdown or embrittlement and prevent any electrolytic  action because of the steel-rubber interface of joints and mating flange.

A wide variety of natural, synthetic and special purpose elastomers and fabrics are available to the industries. Materials are treated and combined to meet a wide range of practical pressure/temperature operating conditions, corrosive attack, abrasion and erosion. ditec offers a variety of elastomers and construction materials chosen specifically to meet the needs of even the most demanding applications.

Rubber expansion joints are relatively light in weight, contributing to lower installation costs.

Rubber expansion joints are supplied with flanges of vulcanized rubber and fabric integrated with the tube, making the use of extra gaskets unnecessary. A ring gasket or metal plate maybe required for raised flanges or mating flanges with recess to equalize the flange surface.

Minimal face-to-face dimensions in rubber expansion joints offer advantages, compared with costly expansion bends, loops or metal expansion joints. Due to the inflexibility of metal expansion joints they require at least 2 times wider installation gaps to cope with the same movement requirements as rubber joints.

It is common in both new construction and replacement applications to encounter pipe misalignment. Minor misalignment can be taken up with standard rubber expansion joints, and custom units can be fabricated with large permanent offsets.