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The bellows to seal the pass-trough in expedition vehicles

Accordion Seal – The Original

"Our high-quality bellows are from durable ethylene propylene diene rubber (EPDM). This exceptionally robust material can stretch significantly without tearing. In addition, EPDM is resistant to UV radiation, ensuring long-lasting durability—even under the harshest conditions worldwide. Thanks to its special design, our bellows are suitable even for vehicles with a narrow gap between the cab and the living cabin or with significant torsional movement. Moreover, the integrated push-on springs make installation especially easy, while ensuring a secure and tight fit—guaranteed!"

Sample Order

Tips for Installation

The installation of our bellows can be done either directly on sheet metal or on various frame constructions. Here, we have listed the different options for you, along with their advantages and disadvantages, so you can decide which method best suits your needs.

Direct installation on sheet metal

This method is by far the most pragmatic. It is also suitable when there is very little space between the cab and the living cabin. No additional frame is required. It can be used whenever the outer shell of your cab or cabin is made of sheet metal. Openings are cut into the outer shell on both sides, ensuring rounded corners with a... Read More

Frame made of F-profile

Aluminum F-profiles are commercially available, but the selection of different dimensions is somewhat limited. Steel F-profiles can be produced by welding two L-profiles together. The edge onto which the bellows will later be pressed on should not exceed a material thickness of approximately 4 mm. The corners should have an outer radius... Read More

Frame made of Z-profile – Variant I

Aluminum Z-profiles are commercially available. Steel or stainless steel Z-profiles can be custom-bent at a low cost to fit specific dimensions. The edge onto which the bellows will later be pressed should not exceed a material thickness of approximately 4 mm. Radii must be welded into the corners, for which sections of a round tube... Read More

Frame made of Z-profile – Variant II

This method is also suitable when there is very little space between the cab and the living cabin. However, since a Z-profile frame in this variant extends into the pass-trough, the usable passage size is reduced. Aluminum Z-profiles are commercially available. Steel or stainless steel Z-profiles can be custom-bent at a low cost to... Read More

Frame made from T-profile

This method is also suitable when there is very little space between the cab and the cabin. However, since a T-profile frame extends into the passage, the usable passage size is reduced. Equal- and unequal-sided T-profiles made of aluminum and steel are commercially available. When using steel profiles, it is important to ensure that... Read More

Subframe made of U-profile

If a particularly large gap between the cab and the living cabin needs to be bridged, a subframe made of U-profile can be used. U-profiles made of aluminum are available in various dimensions. The material thickness should not exceed approximately 4 mm, and the corners should be rounded with a minimum outer radius of 20 mm. Two bellows must then be installed in the passage. Different seal sizes can be freely combined for this purpose.

Bonding

To bond the two ends of the bellows together, we recommend using the special EPDM sealant adhesive ELEVATE™ EasySealant™. We advise against using contact adhesives (such as the PETEC profile rubber adhesive) and products based on cyanoacrylate (super glue). In our experience, the adhesion of contact adhesives to EPDM is insufficient. Once cured, super glue lacks the necessary flexibility, which can lead to the bonded joint breaking. You can find more information on how to apply ELEVATE™ EasySealant™ on the corresponding product page in our shop.

Customer Recommendations

Marcus F.

I requested a bellows and had it shipped to Portugal. ABSOLUTELY recommended – excellent quality, really very flexible, I can only recommend it. The communication was outstanding – truly exemplary service. Keep up the great work!

Juri P.

Hello Frederik, I’ve just completed the individual inspection. Your bellows fits perfectly and looks great! Thanks again! You’re offering a truly fantastic product!