Rubber expansion joints are flexible connectors made from natural or synthetic elastomers. They provide a
flexible and proven solution to movements.
To provide physical reinforcement, special fabrics could be embedded.
Materials for rubber expansion joint
Application | Temperaature | |
Neoprene (CR) | Cooling system | -30℃~100℃ |
EPDM | Heating, Hot water, and ventilation systems | -40℃~140℃ |
Hypalon (CSM) | Chemical plant, strong acids (except nitric and sulphuric acid) | -25℃~130℃ |
Viton (FKM) | High temperature, Petroleum derivatives | -25℃~220℃ |
Nitrile (NBR) | Portable water districution, Oil & gas transportation, refineries | -25℃~100℃ |
Buthyl TH | High temperature | -40℃~150℃ |
Flue Gas Desulfurization
Designed to resist corrosive attack at elevated temperatures and pressure where metallic, plastic or
elastomeric expansion joints would be inadequate.
The ideal scrubber service material for flue duct expansion joints in power plants. free from chemical attack.
The process used to produce CrossFilm™ results in a PTFE material with exceptional 360 degree tear strength
and durability.
No fiberglass reinforced material is able to rival the tremendous flexing properties of CrossFilm™.
Flexing capability Fluoroelastomers, which are vulnerable to unpredictable chemical environments and
excursion temperatures above 400°F (204°C), can be unreliable. High plant expenditures to cover the many
costs associated with unscheduled or frequent expansion joint failures can be the result.
Composite no leak type non-metallic expansion joint consist of multiple layer of high temperature fabrics,
thermal insulation and an external cover of materials required by the operating conditions and external
atmosphere of expansion joint.
PFE film laminated fiberglass vapor barrier and extra reinforcing piles are also used if there is a cycle of flue
gas through the dew point.
Support ring inserted expansion joint could compress itself to 20% of the original size. Mainly used to protect
cylinder or objects with both axial and lateral movements.