Large hollow half-round EPDM sponge rubber seal with 3M Peel-N-Stick adhesive. Closed-cell core, solid skin surface, skirted recessed adhesive design. Commonly found on trailer drop gates. Hand crafted and made in USA.
The Steele Rubber Products 90-3480-283 is a high-quality large hollow half-round peel-and-stick sponge rubber seal engineered for demanding RV applications, most notably trailer drop gates and ramp doors. The half-round hollow profile compresses evenly under closing force, creating a consistent, weather-tight barrier that protects the RV cargo area from road dust, moisture, and outside air infiltration.
Unlike standard open-cell foam products, this seal is constructed with a closed-cell sponge core surrounded by a solid skin surface for significantly greater weather resistance, wear resistance, and long-term resilience. The exclusive skirted Peel-N-Stick design recesses the 3M adhesive tape beneath protective side flanges, preventing moisture and debris from working their way behind the seal edge and compromising the bond. Hand crafted in the USA and backed by Steele Rubber's 100% Satisfaction Guarantee, this seal is also sold under part number 70-3859-283.
Compresses evenly and consistently under door closing force for a reliable, gap-free seal along ramp gates and drop doors
Solid skin surface over a closed-cell sponge core resists moisture absorption and delivers superior wear and weather resistance
Recessed 3M Peel-N-Stick tape is shielded by side skirting flanges to block moisture and debris buildup for lasting adhesion
Hand crafted from premium EPDM rubber with a 100% Satisfaction Guarantee from Steele Rubber Products
This large hollow half-round seal is commonly found on the following Jayco toy hauler models: Jayco Seismic — Fifth wheel toy hauler; drop gate / ramp door perimeter seal Jayco Octane — Travel trailer toy hauler; drop gate / ramp door perimeter seal Jayco Talon — Travel trailer toy hauler; drop gate / ramp door perimeter seal Also suitable for a wide variety of other RV brands and models including Entegra, Fleetwood, Forest River, Keystone, Thor, and Winnebago applications wherever a large hollow half-round profile is required. Compatibility is not guaranteed. Always verify the gap dimensions (9/16" H x 3/4" W) match your specific application before ordering. Actual fit may vary based on individual model year and manufacturing variations.
Thorough surface preparation is the single most important factor in a successful installation. The bonding surface must be completely clean and dry before applying the seal. • Remove all old seals, adhesive, and residue using a general-purpose adhesive cleaner or rubbing alcohol • Allow the surface to dry completely — applying over wet cleaner prevents adhesion • Apply within the recommended temperature range: 60–104°F (15–40°C) • Minimize the temperature difference between the seal and the bonding surface The seal bonds quickly on contact, so work carefully and deliberately. Lifting and repositioning after application will reduce adhesion quality.
Step-by-Step Installation: 1. Clean the Surface: Remove all old seals, adhesive, and residue using adhesive cleaner or rubbing alcohol 2. Dry Completely: Allow the surface to dry fully — moisture will prevent adhesion 3. Check Temperature: Confirm both seal and bonding surface are between 60–104°F (15–40°C) 4. Peel & Apply: Starting at one end, remove the backing a few inches at a time — do not remove all backing at once 5. Press Firmly: Apply steady, even pressure along the full length of the seal 6. Corner Bonding: For full perimeter applications, use a small amount of cyanoacrylate (super glue for rubber) at end-to-end joints 7. Allow to Cure: Seal bonds immediately on contact; allow 72 hours for full adhesion strength before heavy use or weather exposure
In The Package: • One (1) continuous 30 ft strip of 90-3480-283 Peel-N-Stick Large Hollow Half-Round RV Seal • 3M adhesive backing pre-applied and protected by release liner Recommended Supplies (Not Included): • Adhesive cleaner or isopropyl rubbing alcohol for surface prep • Disposable rags or shop towels • Steele Rubber Scraper/Tuck Tool (optional, aids clean installation) • Cyanoacrylate adhesive (super glue for rubber) for corner end-to-end bonding on perimeter seals
The 90-3480-283 measures 9/16" tall x 3/4" wide uncompressed. Use these guidelines to confirm fit: Gap Size: The seal height should be slightly larger than the gap between the closed door and frame to ensure proper compression Surface Width: Confirm the mounting surface is at least 3/4" wide to accommodate the full seal base and skirted adhesive flanges Perimeter Length: Measure the total door frame perimeter before ordering. This 30 ft strip covers most full-perimeter toy hauler drop gate applications. Also available in 15 ft lengths and by the foot.
The hollow half-round profile is specifically well-suited for trailer drop gates and ramp doors because it compresses consistently and evenly across the full door frame length, eliminating gaps that allow moisture, road dust, and outside air into the cargo area.