Rubber expansion joints

Guidelines for Long-Term Storage of Rubber Expansion Joints

Rubber expansion joints, when not stored correctly, can deteriorate over time and therefore inadequate storage practices can lead to the degradation of rubber components, the corrosion of metallic elements, and a decrease in overall reliability. To avoid this, it's essential to follow best practices for their storage, ensuring their longevity and preventing potential issues.

In this section, we provide advice on the proper techniques for preserving the integrity and functionality of rubber expansion joints during extended storage periods.

To store Rubber Expansion Joints for a long period, it is crucial to notify MACOGA and request specialized packaging designed for long-term storage.

If dealing with harsh environmental conditions, it is advisable to reach out to MACOGA for tailored packaging solutions.

Procedure for long term storage

1. Materials and Tools:

  1. Rubber expansion joints
  2. Clean and dry storage area
  3. Pallets or racks
  4. Plastic or heavy-duty fabric covers
  5. Moisture-absorbing desiccants (optional)
  6. Handling equipment (forklift, pallet jack, etc.)

2. Do not remove the Expansion Joints from its original packaging until you are ready to install.

3. Storage Area. Optimal storage conditions involve using a warehouse situated in a relatively dry and cool environment. Ensure the storage area is clean and free of debris, dirt, and moisture. Maintain a stable temperature and humidity level. Ideally, the storage area should be within the recommended temperature and humidity range for rubber storage. Ideal storage is a warehouse with a relatively dry, dark, cool location. The warehouse temperature should not be over 27 °C (80 °F).

Outdoor storage is not recommended for extended periods of time. If outdoor storage becomes necessary, it is imperative to place the expansion joints exclusively on wooden platforms, ensuring they remain entirely isolated from direct contact with the ground. In addition, it's essential to employ sun and water protection measures, such as a tarpaulin and UV-resistant coverings. Please be aware that storing the joints outdoors for extended periods of time can result in premature deterioration.

4. Place pallets or racks in the storage area to keep the rubber expansion joints off the ground. This prevents direct contact with the floor and minimizes the risk of damage. Store flange face down on a pallet or wooden platform. Do not store other heavy items on top of an expansion joint.

5. Protect from UV Exposure. Rubber is sensitive to ultraviolet (UV) light, so avoid exposing the expansion joints to direct sunlight. Use covers or place them in a shaded area if UV exposure is a concern.

6. Protect from Ozone. Storage near ozone producing equipment should be avoided.

7. The Expansion Joints should be reasonably protected from any accidental impacts

8. Stacking and Palletizing. Stack the expansion joints on the pallets or racks in a way that minimizes stress on the joints and prevents deformation. Store flange face down (in an axis (vertical position) on a pallet or wooden platform. Do not store other heavy items on top of an expansion joint. Ensure that the weight distribution on the pallets is even to prevent crushing or distortion of the expansion joints.

9. Label and Document. Label each stored expansion joint with relevant information such as size, type, and date of storage.

10. Maintain a record of the inventory, including quantities, specifications, and storage locations.

11. Replace desiccants if used to maintain low humidity levels

Periodical Check

Regularly inspect the stored expansion joints to ensure they remain in good condition. Check for any signs of damage, deformation, or deterioration.


When the Expansion Joints are removed from storage, check for rubber deterioration, corrosion or damage.

Refer to Instruction for Storage, Unpacking, Handling and Assembly of MACOGA Rubber Expansion Joints document and/or specific project documentation.

Refer also to the MACOGA Installation, Operation & Maintenance Manual for complete start-up procedure.

By following these guidelines, you can help ensure that your rubber expansion joints remain in optimal condition for their intended use, even during long-term storage. Proper storage practices are essential to extend the service life and performance of these critical components.

Ten year shelf-life can be expected with ideal conditions.


Hazardous Materials

While the materials, methods, applications and processes described or referenced in this standard may involve the use of hazardous materials, this standard does not address the hazards which may be involved in such use. It is the sole responsibility of the user/tester to ensure familiarity with the safe and proper use of any hazardous materials and testing and to take the necessary precautionary measures to ensure the health and safety of all personnel involved.

This document is “for information only” and MACOGA does not accept any liability of the information contained herein. The Purchaser shall be responsible for proper storage, unpacking, handling and installation of the Expansion Joints and operating within the design limits of the delivered unit(s).