Overview

What's So Amazing?

As a leading supplier of extrusion seals for the RV industry, Seal Design is dedicated to providing solutions that work for you. Our staff and engineers bring many years of experience to your custom design, working with an exceptional range of extrusion profiles and attachment systems that can give your product the distinctive edge it needs in the marketplace.

Why are TPV extrusions better?

TPV extrusions offer a much more durable option than EPDM, which are often over compressed by manufacturers seeking a tighter seal. The open cell structure of EPDM seals is not made to be compressed more than 30 percent, but manufacturers often compress the seal by as much as 70 percent. In this case, the open cell structure of EPDM seals will quickly break down, causing the seal to fail, with leaking the likely consequence. The seals can also shrink and become brittle.

EPDM extrusions are cellular in nature with small pockets of air in the rubber. Over time, the cells break down (burst) and the pocket collapses thereby losing it's "bouce back" capabilities. Permanent compression results, the seal is compromised and leaking is the likely consequence.

Used by all automobile companies for door seals, thermoplastics have no cells, there are no pockets of air to collapse and compression set will never take place. As a result, Perma-Fit extrusions will seal as well after 20 years as they do day one.

Seal Design came up with a solution to this by offering TPV seals that can be compressed up to 70 percent and still hold up for the life of the RV. TPV has no cell structure that can break down. Since there are no air pockets to collapse, compression set will never take place and the seal will bounce back without compromise. As a result, Perma-Fit extrusion seals are more elastic and durable and perform well for a long time.

TPV extrusions are used extensively by the automotive industry, where they have been proven to be extremely durable and high quality, working as well after 20 years as they do on day one. Perma-Fit is the only extrusion of this kind for RV use.

Factory Friendly

Seal Design and Dicor Corporation focus on the people and companies that use our products. This includes products, support and services that help improve the production process.

• Perma-Fit seals require no significant changes in the manufacturer’s production process to use. The material is also recyclable, yielding overall part cost reductions.
• Only one supplier source needed, even if using several different profiles.
• Manufacturers can benefit from overall part cost reductions because of recyclability. There’s no production line stoppage because product has indefinite shelf life.
• Seal Design will audit the extrusion needs of customers to identify potential cost savings, installation improvements, and problem solving solutions. Plus we will conduct cycle counts and help with inventory management.