LEER Rear Door Contour Strip – Official Replacement Seal
Our LEER rear door contour strip is the factory-engineered seal that keeps moisture, dust, and road debris out of your truck cap. Manufactured to the same OEM specifications as the original equipment on your LEER cap, this replacement gasket delivers a precise fit along the rear door perimeter where wear and UV exposure eventually degrade the seal.
Designed for truck owners who notice water intrusion, air leaks, or visible cracking along the door edge, this contour strip restores the weathertight performance you expect from a premium truck cap. Installation takes minutes with basic hand tools, and the molded profile matches LEER's door channel geometry exactly.
- OEM-grade EPDM rubber compound resists UV degradation and temperature extremes
- Pre-molded contour matches LEER rear door channel geometry for gap-free installation
- Flexible design compresses evenly across the door perimeter to seal irregular surfaces
- Adhesive backing or mechanical clip mounting (verify your model's attachment method)
- Compatible with most LEER 100-series and commercial cap models (confirm fitment by cap year and model)
Material Construction & Weather Resistance
We manufacture this contour strip from closed-cell EPDM rubber, the same material specified for original LEER cap production. EPDM delivers superior resistance to ozone, UV radiation, and temperature swings from -40°F to 250°F — critical when the seal lives on an exposed truck bed year-round.
The compound remains flexible in freezing weather and won’t soften or turn tacky in summer heat. Unlike generic foam tape or silicone beads, the molded cross-section maintains consistent compression force across the entire door perimeter, preventing the low-pressure zones where water finds its way inside during highway rain.
Installation & Fitment Notes
Preparing the Door Channel
Remove the old contour strip completely and clean the door frame channel with isopropyl alcohol to eliminate residue, dirt, and oxidation. Any contamination under the new seal creates leak paths.
Mounting the Replacement Strip
Most LEER models use either a continuous adhesive backing or a mechanical clip channel. Adhesive-backed strips press into place starting at one corner and working around the perimeter; avoid stretching the material. Clip-mounted versions snap into the existing channel groove — inspect the groove for damage before installation.
When to Replace Your Door Seal
Visible cracking, permanent compression set, or a hardened feel signals the end of seal life. Water stains on cargo inside the cap, wind noise at highway speed, or dust accumulation near the door edge all point to gasket failure.
Most LEER door seals require replacement every 5-8 years depending on climate exposure. Trucks parked outdoors in intense sun or harsh winters see faster degradation. Inspect the seal twice yearly and replace at the first sign of cracking — water damage to your cargo costs far more than a replacement strip.
Essential LEER Cap Replacement Components
What people are saying
Common Questions About the LEER Rear Door Contour Strip
Check for visible cracks, permanent flat spots where the seal no longer rebounds, or a hard, brittle texture when you press the material. Functional signs include water inside the cap after rain, dust accumulation near the door, or wind noise while driving.
If the seal has been on your cap for more than eight years or shows any of these symptoms, replacement will restore weatherproof performance.
This strip fits most LEER 100-series and commercial caps manufactured after 2005. Measure the total perimeter length of your existing seal and compare it to the product length before ordering.
For caps made before 2005 or custom configurations, contact us with your cap's serial number (found on the interior label) and we'll confirm exact fitment and mounting style.
LEER uses both mounting methods depending on cap model and year. Most 100-series caps from recent years use adhesive backing, while some older models and commercial caps use a clip-in channel system.
Inspect your existing seal to identify the attachment method. If you're unsure, send us a photo of the door frame channel and we'll identify the correct version for your cap.
Installation is a straightforward DIY project requiring only basic hand tools and about 30 minutes. Clean the door channel thoroughly, remove the old seal completely, and press or clip the new strip into place starting at one corner.
No special tools or cap disassembly is required. The most important step is cleaning the channel with isopropyl alcohol to ensure proper adhesion or clip engagement.
Expect 5-8 years of service life under normal use and climate conditions. Trucks parked outdoors in extreme sun or severe winters may see shorter lifespan, while garaged vehicles in moderate climates often exceed eight years.
Regular inspection twice yearly helps you catch early wear before leaks develop. EPDM rubber degrades gradually, so proactive replacement prevents water damage to cargo.
Standard lengths match LEER's production bed sizes (5.5-foot, 6.5-foot, and 8-foot). For custom or modified caps, measure your door perimeter and contact us to confirm available lengths or discuss cutting the seal to fit.
Adhesive-backed versions can be trimmed with sharp scissors if you need a precise custom length, but we recommend ordering the next size up to ensure complete coverage.
This seal is molded specifically for LEER door channel geometry and may not fit other manufacturers' profiles correctly. While some aftermarket caps use similar dimensions, we recommend ordering brand-specific seals to ensure proper compression and weatherproofing.
Using a mismatched seal often results in gaps, uneven pressure, or premature wear. Verify your cap brand and model before ordering to guarantee compatibility.