1" EPDM rubber bulb weatherstrip with tee base — slides into track on the inside edge of the slide-out outer wall. Anti-side-flop profile for a secure, snug seal. 1" H x 13/16" W — 30 ft roll. Black. Also known as 70-3832-265.
The Steele Rubber Products 90-3416-265 is a 1" Bulb Weatherstrip with Tee Base — an EPDM rubber bulb seal found on many RV slide-outs, typically located on the inside edge of the slide-out outer wall. The tee base slides into the track built into the slide-out frame, and when the slide-out is retracted, the bulb compresses against the camper wall or slide-out wiper to create a weathertight seal that keeps moisture, inclement weather, insects, and debris out of the coach.
The 70-3832-265 profile features a unique anti-side-flop design that prevents the bulb from flopping to one side under compression, ensuring the seal makes consistent, full contact with the mating surface every time the slide-out closes. This greater surface contact improves the effectiveness of the seal and helps maintain long-term sealing performance across repeated extension and retraction cycles.
Made from durable EPDM rubber for superior weather resistance and long-term outdoor performance. The 30-foot roll is well-suited for a single slide-out full perimeter replacement or a two-side repair on most RV configurations. Commonly paired with flat blade wiper weatherstrips, which are sold separately.
Unique profile design prevents the bulb from flopping sideways under compression for consistent full-contact sealing every time
Tee base slides securely into the track on the slide-out frame — no adhesive or hardware required for installation
Typically positioned on the inside edge of the slide-out outer wall, sealing against the coach wall or wiper when retracted
EPDM rubber construction provides superior weather resistance and long-term durability through all seasons
The tee base on this seal must match the track width on your slide-out frame. Before purchasing, measure the track opening on your existing slide-out to confirm this profile will fit. The 70-3832-265 tee base is a specific dimension — it is not universally interchangeable with all RV slide-out tracks. This seal is typically paired with a flat blade wiper weatherstrip, which is sold separately. Confirm you have the correct companion wiper for your slide-out configuration before completing your order. When in doubt, consult your RV's service documentation or measure the existing seal profile before ordering.
Primary Part Number: 90-3416-265 Also Known As: 70-3832-265 Available Lengths (Same Profile): • 15 ft — Part 90-3415-265 • 30 ft — Part 90-3416-265 (This Item) • 60 ft — Part 90-3417-265 • Also available by the foot for custom lengths Note: Companion flat blade wiper weatherstrip is commonly paired with this seal and is sold separately.
What You Need: No adhesive or hardware required. Recommended supplies: tape measure, scissors or utility knife, soft cloth for cleaning the track. Basic Installation Steps: 1. Confirm Track Compatibility: Measure your existing track opening and compare against this seal's tee base dimensions before installing 2. Remove the Old Seal: Pull the existing bulb seal out of the track. Clean any debris, dirt, or old rubber residue from the track channel 3. Measure & Cut: Cut the new seal to the required length with scissors or a sharp utility knife 4. Slide In the Tee Base: Starting at one end, press and slide the tee base into the track, working along the length until fully seated 5. Confirm Seating: Verify the tee base is fully and evenly seated in the track with no sections pulled out or misaligned 6. Test the Slide: Extend and retract the slide-out to confirm the bulb compresses evenly against the wall or wiper and holds securely in the track
Included: • One (1) 90-3416-265 Bulb Weatherstrip with Tee Base • 30-foot pre-cut roll • EPDM rubber, black, with anti-side-flop profile NOT Included: • Companion flat blade wiper weatherstrip (sold separately) • Tape measure, scissors or utility knife for cutting • Cleaning supplies for track preparation
All three lengths share the same tee base profile, EPDM rubber construction, and anti-side-flop design. Also available by the foot for custom lengths. Order the length that best matches your project to minimize waste.