EPDM sponge rubber ribbed hollow bulb seal with 3M Peel-N-Stick adhesive. 1" H x 7/8" W ā 15 ft roll. White. For RV slide-outs and toy hauler ramp-gates. Commonly found on Starcraft, DRV Mobile Suites, and National RV.
The Steele Rubber Products 90-3509-265 is a 1" Ribbed Hollow Bulb Weatherstrip in white, designed to create a dynamic compression seal against your RV when your slide-out is fully closed ā keeping moisture, insects, and outside air out of your coach. The ribbed hollow bulb profile is engineered for heavy pressure load applications, compressing uniformly under repeated slide-out cycling without permanent deformation or seal failure.
Manufactured from high-quality EPDM sponge rubber with superior wear and weather resistance, this seal is backed with weather-resistant 3M Peel-N-Stick adhesive tape for a fast, clean installation. Simply prepare the surface, peel the backing, and press the seal into place ā no hardware, track, or tools required. The 3M adhesive provides a strong, durable bond that holds up to road vibration, temperature cycling, and repeated slide-out use.
Available in white to match slide-out frames on RVs where color matching matters. Commonly found on Starcraft, DRV Mobile Suites luxury fifth wheels, and National RV models. The same profile is also used on toy hauler ramp-gates as a compression seal along the gate perimeter. The black version of this seal is available under part 70-3677-265.
Weather-resistant 3M adhesive backing bonds directly to the mounting surface ā peel, press, and done
Ribbed design enhances compression recovery and sealing performance under heavy and repeated pressure loads
Designed for RV slide-outs and toy hauler ramp-gate perimeter sealing applications
Superior wear and weather resistance ā will not fade, shrink, or crack under UV, ozone, or temperature extremes
For best adhesive bond strength, install this seal when ambient temperatures are between 60Ā°F and 104Ā°F (15Ā°Cā40Ā°C). The temperature difference between the parts being bonded and the bonding surface should be as small as possible. Always prepare the mounting surface before applying: Completely remove all old adhesive residue, sealants, dirt, wax, and moisture. A clean, dry surface is critical for a long-lasting bond. For the strongest hold, wipe the surface with isopropyl alcohol and allow it to fully dry before peeling the backing and pressing the seal into place. Compatibility is not guaranteed for all RV models, years, and configurations. Always measure your existing seal and confirm the profile matches (1" H x 7/8" W) before ordering.
Primary Part Number: 90-3509-265 Base Part Number: 70-3970-265 Available Lengths ā White Version: ā¢ 15 ft ā Part 90-3509-265 (This Item) ā¢ 30 ft ā Part 90-3510-265 Black Version of Same Profile: ā¢ Black ā Part 70-3677-265 (available by the foot, 5 ft, 10 ft, 15 ft, 30 ft) Note: Also available by the foot for custom lengths ā select the number of feet needed and it will be sent as one continuous piece.
What You Need: No hardware or tools required. Surface prep supplies recommended: isopropyl alcohol or adhesive remover, clean cloth, and tape measure. Basic Installation Steps: 1. Check Temperature: Confirm ambient temp is between 60Ā°F and 104Ā°F (15Ā°Cā40Ā°C) for best adhesive bond 2. Prep the Surface: Remove all old seals, adhesive residue, dirt, wax, and moisture from the mounting surface completely 3. Clean & Dry: Wipe with isopropyl alcohol and allow to fully dry ā the surface and seal should be as close to the same temperature as possible 4. Measure & Cut: Cut the seal to the required length with scissors or a sharp utility knife 5. Peel & Press: Remove the adhesive backing and press the seal firmly onto the surface, working from one end to the other 6. Test the Slide or Gate: Close the slide-out or ramp-gate to confirm the bulb compresses evenly and the seal bonds hold
Included: ā¢ One (1) 90-3509-265 Ribbed Hollow Bulb Weatherstrip ā¢ 15-foot pre-cut roll ā¢ 3M weather-resistant Peel-N-Stick adhesive backing ā¢ White EPDM sponge rubber construction NOT Included ā Recommended for Installation: ā¢ Isopropyl alcohol or adhesive remover for surface prep ā¢ Clean cloth or paper towels ā¢ Scissors or utility knife, tape measure
All options share the same ribbed hollow bulb profile and EPDM sponge rubber construction. Choose the color that matches your slide-out frame and the length that best covers your project. All versions are also available by the foot for custom lengths.