When your RV's slide-out starts letting in wind, dust, or weather, the rubber seals around the opening are usually the first thing to fix. Two combo kits in the RV camper systems accessories aisle bring the 018-312-EKD D-shaped seal and the 018-341 EK base together in one order, but they're priced differently. The choice comes down to whether the higher-priced version earns the extra money.
Quick verdict
For most RV owners, the lower-priced combo is the easier call. The two orders cover the same part numbers, are both new black rubber, and share the same money-back-or-replacement after-sales promise. The higher-priced combo is for shoppers who want extra confidence before ordering, so the deciding factor is how much that confidence is worth to you.
At a glance
| Combo | Listed price | Price bar |
|---|---|---|
| RV Slide Out Seal Combo 018-312-EKD + 018-341 EK | USD 53.00 | |
| Combo RV Slide Out Seal 018-341 EK 018-312-EKD | USD 63.99 |
Where each product wins
- Price: the RV Slide Out Seal Combo 018-312-EKD + 018-341 EK has the lower listed price, which makes it the choice for cost-conscious buyers.
- Pre-order confidence: the Combo RV Slide Out Seal 018-341 EK 018-312-EKD includes a fit-check step and an installation pointer, giving first-time seal buyers a little more to hold onto.
Product notes
RV Slide Out Seal Combo 018-312-EKD + 018-341 EK
At $53.00, this combo pairs the 018-312-EKD D seal with the 018-341 EK base and gives you a black rubber replacement designed to keep rain, snow, dust, and road noise away from the camper. The D seal slides onto the EK base track and screws into place, which is the intended way to set up this two-piece seal. Choose this one when you have already checked your part numbers and want the lower of the two listed prices. The main thing to watch is the title order: it leads with 018-312-EKD, so if you normally search by the 018-341 EK base first, take an extra moment to confirm the package contents before ordering.
Combo RV Slide Out Seal 018-341 EK 018-312-EKD
The higher-priced combo reverses the order in its title, putting the 018-341 EK base first. It costs $63.99, $10.99 more than the other combo, but it adds a clear instruction to compare the model number, part number, and photo of the seal to your existing parts before you place the order. That extra fit-check step can keep you from buying the wrong slide-out seal. The product also mentions removing the tape from the 018-341 EK base when you install, a helpful detail if you are working under the slide-out for the first time. Choose it if you like seeing the compatibility check spelled out before you pay; the trade-off is the higher price for essentially the same two seals.
Final choice by use case
- If you have already matched the 018-312-EKD and 018-341 EK to your RV and you want the least expensive route, go with the RV Slide Out Seal Combo that carries the lower price.
- If you prefer the version that walks you through a compatibility check and includes the installation pointer, choose the Combo RV Slide Out Seal at the higher price.

