Last spring, I pulled my 2017 travel trailer out of winter storage and immediately noticed something alarming. Water stains had crept along the interior wall next to my bedroom slide-out. My heart sank. After some careful poking around, the culprit was obvious — the slide-out seals had cracked, hardened, and shrunk over two cold winters. I knew I needed a solid RV slide-out seal replacement kit review experience of my own before blindly buying whatever showed up first in search results. So I did the research, ordered the parts, and tackled the whole job myself over a long weekend in April.
This wasn’t a small problem. My slide-out is roughly 12 feet wide, and both the D-seal and the wiper seal were in bad shape. The rubber had gone brittle — I could flex a section and it would almost crack in my hand. Water wasn’t just threatening to get in; it had already started. I needed a replacement that matched the original specs exactly, because a seal that’s even slightly wrong in profile can gap, bunch, or fail to compress properly.
The D-Seal and Clip Base Combo That Actually Stops Water From Tracking Into the Walls
Hardened, shrunken slide-out seals don’t just leak—they let water migrate behind the walls where you can’t see it until mold and soft spots show up months later. This combo kit replaces both the wiper seal and the base clip together, which matters because a new wiper on a deteriorated base is just delaying the same failure.
What works
- The D-seal wiper flexes without cracking in cold storage, and you’ll notice the slide operating with actual resistance again—not the sloppy, gritty feeling of a worn-out seal.
- The new clip base holds the wiper seal in place without gaps, so water sheds cleanly instead of pooling at the corners where the seal meets the frame.
- Both pieces come pre-cut to length and use standard RV lithium grease, so no hunting for obscure adhesives or waiting for custom sizing.
What doesn’t
- Installation is straightforward, but removing the old hardened seals takes patience and heat—a heat gun and plastic scraper are non-negotiable, and if you don’t get the base clean, the new seal won’t sit flush.
- Amazon shipping times fluctuate; I’ve seen this kit take 2–3 weeks to arrive, which isn’t helpful when water is actively getting into your walls.
I second-guessed whether I needed both pieces or could just swap the wiper, but after pulling that old base clip out and seeing how warped it had become, I knew I’d made the right call going with the combo. Get the Combo RV Slide Out Seal Kit Replace 018-312-EKD & 018-341 EK, 1″ × 15/16″ × 35′ D-Seal Wiper & 1/2″ × 2.75″ × 35′ Travel Trailer Weather Stripping Clip Base before water damage spreads.
Combo RV Slide Out Seal Kit Replace 018-312-EKD & 018-341
I replaced mine twice before this—the clip base finally keeps water from collecting at the corners.
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