Sealing system for the rear portal – reliable protection of the truck body against water and dirt
A sealing system at the rear portal of the truck body has a safety- and value-preserving function. It protects the cargo area against penetrating water, splash water, dirt and drafts and ensures that the transported goods arrive dry and undamaged at their destination. In this category you will find a complete range for the sealing system at the rear portal – sealing profiles, lip and corner seals, as well as fastening elements for retrofitting or replacing worn components. At SULEJ Ladebordwand, decades of experience in maintenance and repair on trucks and commercial vehicles flow directly into the selection of these components – for reliable sealing of the rear portal even under continuous mechanical and weather-related stress.
Function and area of application at the rear portal of the truck body
The rear portal is the rear opening of the box body and at the same time forms the transition to the tail lift or to the rear doors of the commercial vehicle. This is exactly where different components meet – body frame, door profiles and floor structure. Without a precisely matched sealing system for the rear portal, rain, splash water and dust would enter the cargo area unhindered. The seals close these gaps reliably and protect cargo, floor material and sensitive components in the interior against moisture. At the same time, they absorb vibrations and minor movements between door and frame and thus reduce rattling noises and wear on hinges and locks.
Designs, profiles and materials
The sealing system at the rear portal of the truck body consists of several coordinated profiles. P-profiles, D-profiles, hollow chamber seals, lip seals and special corner seals that close the transition between the straight sections cleanly are common. Each profile has its own task – from flat sealing of the door area to point-precise sealing of critical corner regions.
EPDM rubber is predominantly used as the material. EPDM is temperature- and weather-resistant, retains its elasticity even in frost and withstands UV radiation, ozone and many chemicals. In addition, mixed forms of EPDM with foam core are used, which provide a particularly soft, adaptable sealing effect. Self-adhesive backs, clamp profiles or push-on seals allow installation-friendly fastening at the rear portal depending on the design.
