When your RV slideout seal starts letting in weather or road noise, the fix is usually a matching D seal and base track. In RV camper systems accessories, two products pair the same 018-312-EKD D seal with the 018-341-EK base, and both are cut in 35-foot lengths. The D seal slides onto the EK base to keep rain, snow, dust, dirt, and noise out, while the rubber handles extreme weather. The two products are priced differently, though: the RV Slide Out Seal Combo sits at the lower end, while the 2-in-1 product asks more. Here's how to decide.
Quick verdict
Choose the RV Slide Out Seal Combo for most replacements. It pairs the same D seal and EK base as the other option. The main difference is the title and description clarity: the 2-in-1 spells out its format and includes a reminder to verify your old part, while the combo simply lists the part numbers. If you don't need the extra wording, the combo is the straightforward pick.
Side-by-side comparison
| Feature | RV Slide Out Seal Combo | 2-in-1 RV Slide Out Seal |
|---|---|---|
| Part numbers | 018-312-EKD + 018-341 EK | 018-312-EKD + 018-341-EK |
| D seal dimension | 1" x 15/16" x 35' | 1" x 15/16" x 35' |
| EK base dimension | 1/2" x 2.75" x 35' | 1/2" x 2.75" x 35' |
| Color / condition | Black / New | Black / New |
| After-sales | Money back or replacement | Money back or replacement |
| Price | USD 53.00 | USD 65.99 |
Where each product wins
The combo wins if you want the same two seals without additional wording in the title. The 2-in-1 wins if you want the explicit "2 in 1" label and the pre-order part-number reminder from the description.
Product notes
RV Slide Out Seal Combo 018-312-EKD + 018-341 EK for RV Camper Slideout System
For most RV owners, the combo is the natural choice when you just want the two seals. It includes the D seal and the EK base, and the description highlights protection from rain, snow, dust, dirt, and noise. The after-sales option lets you choose between money back or a replacement. What you give up is the explicit "2 in 1" wording in the title, so you'll want to confirm the part numbers yourself. If you're comfortable doing that, the combo gives you the same pieces with a more straightforward title.
018-312-EKD 018-341-EK 2 in 1 RV Slide Out Seal For RV Camper Slideout System US
The 2-in-1 makes it easy to see what you're getting before you click: both part numbers and the "2 in 1" format are right in the title. The description also reminds you to check that the model number, part number, and photo match your current slideout seal, which is a useful extra step when ordering replacement rubber. It shares the same after-sales policy as the combo. The longer title, with the extra "US" wording, is a bit more to read, and the seal itself is the same. Choose it when the upfront clarity gives you more confidence.
Final choice by use case
If you want the lowest listed price and can match part numbers yourself, the RV Slide Out Seal Combo at USD 53.00 is the pick. If you prefer a product that spells out "2 in 1" and reminds you to verify your old part before ordering, the 2-in-1 at USD 65.99 is the alternative. First-time replacers may appreciate that pre-order reminder; experienced owners can safely order the combo. Either way, you're getting the same pair of seals for your RV slideout system.
