Rubber expansion joints
We have a wide range of rubber expansion joints with up to 20 different types in 8 different rubber qualities to suit all purposes. So, at WILLBARNDT you can always find a quality solution.
Different tasks demand different solutions, therefore, we offer rubber expansion joints with diffrent accessories.
Our expansion joints are handmade at WILLBRANDT in Germany where they are specialist in production and development of expansion joints. All our expansion joints are quality tested before they are released.
We have a large stock of expansion joints in Hamburg, which enable us to deliver against a very short delivery time.
Examples of our highrunners
Type 49
- DN 32-DN500
- Small building length (100 – 110 mm)
- High corrugation bellow
- Low internal resistance
- 98% reducing of structure-borne noise
- Threaded holes
- Max. 25 bar
Often used in the construction industry.
Type 51
- Building length (130-250mm)
- Low corrugation bellow
- Low flow resistance
- High movement absorption in all directions
- 70% reducing of incoming energy
- 4 different types of rubber combinations are available
- Max. 25 bar
Often used in building industry, water and wastewater technology, engine construction and shipbuilding.
Type 50 and 55
- Building length (130-300 mm)
- Low corrugation bellow, highly elastic rubber expansion joint
- Low flow resistance
- High movement absorption in all directions
- 70% reducing of incoming energy
- A lot of different types of rubber available
- Max. 16 bar
Often used in building industry, water and wastewater technology, engine construction and shipbuilding.
Example of custom-made expansion joints
Type 40
- DN200 – DN5000
- High corrugation bellow
- Low internal resistance
- High movement absorption in all directions
- Handmade
- Working pressure and temperature depend on customer specifications
Often used in large industrial plants and power plants.
Maintenance
For all expansion joints
- First inspection after
1 week - 1st, 4th, 12th month
- Annual Inspection
All inspection should include
- Check position
- External damage
- Check for blistering
- Check for cracks
- Check hardening
Design parameters
- Diameter (DN)
- Built in length
- Working pressure
- Vacuum
- Medium (inside/outside surroundings)
- Working temperature
- Movements
- Flow velocity
Movements
Not in combination
Accessories
Vacuum supporting rings
Support rings are used for vacuum operation.
Inner sleeves
Support rings are used for operation in vacuum.
Spacer ring
Inner sleeves are used with high flowrate, which generate turbulence in the media, as turbulence causes unnecessary wear of the bellow.
Get the best solution
You are welcome to contact us if you have questions or special requests. We are happy to help with recommendations to find the best solution. Through our network of producers and developers we can always ensure competent advice and high-level service to our customers.
