When you're shopping for RV camper systems accessories, a slideout seal replacement is one of those jobs where the part number has to match before anything else. Both of these kits are built around the same pair: the 018-312-EKD D-shaped seal and the 018-341 EK base seal, sold together in black 35-foot runs. That makes the real buyer decision less about compatibility and more about price, product-name clarity, and which package feels like the safer order.
Quick Verdict
With the same part numbers in both packages, the functional difference between these two options is essentially zero. The Combo RV Slide Out Seal costs less, while the 018-312-EKD 018-341-EK 2 in 1 kit runs a little more but states the 2-in-1 relationship directly in its title. If you care mainly about spending less, the combo is the pick. If you want the part-number relationship spelled out, the 2-in-1 kit is worth the small price difference.
At a Glance
| Product | Listed Price | Price Bar | After-Sales Support |
|---|---|---|---|
| 018-312-EKD 018-341-EK 2 in 1 RV Slide Out Seal | USD 65.99 | Money back or replacement (buyer's choice) | |
| Combo RV Slide Out Seal 018-341 EK 018-312-EKD | USD 63.99 | Money back or replacement (buyer's choice) |
Where Each Product Wins
- The 018-312-EKD 018-341-EK 2 in 1 RV Slide Out Seal wins when you want both part numbers named in a clear "2-in-1" order and you're willing to pay a bit more for that clarity.
- The Combo RV Slide Out Seal 018-341 EK 018-312-EKD wins when you want the lower price, because the included seals and after-sales support are the same.
Product Notes
018-312-EKD 018-341-EK 2 in 1 RV Slide Out Seal
At USD 65.99, this is the higher-priced of the two kits, but it puts the 018-312-EKD D-seal and the 018-341 EK base together in the product name, making it easy to see that you're getting both profiles. The kit is black, new, and described as easy to install, and the after-sales option lets you choose money back or a replacement. The limitation is the price: you're paying two dollars more for essentially the same parts in the same lengths and color. If the extra clarity of a "2 in 1" title matters to you, it's a fair trade; if not, the cheaper combo covers the same replacement job.
Combo RV Slide Out Seal 018-341 EK 018-312-EKD
The Combo RV Slide Out Seal is the more affordable way to get the same two-part slideout seal setup. The 018-312-EKD slides into the 018-341 EK base, and the set comes with the same easy-install design and the same 35-foot runs as the other kit. The main reason to choose it is the price advantage: you get the same profiles and the same new condition for less. The limitation is naming-the part numbers are reversed compared with the other kit, so you have to read the full title to confirm it includes both the EKD and the EK pieces. For someone who already knows the part numbers, this is just a minor wording difference.
Final Choice by Use Case
Order the Combo RV Slide Out Seal 018-341 EK 018-312-EKD when you're price-conscious and comfortable matching part numbers yourself. Order the 018-312-EKD 018-341-EK 2 in 1 RV Slide Out Seal when you'd rather have the 2-in-1 relationship stated at the top of the product name and are okay with a two-dollar premium. For most RV camper slideout replacements, the combo's price advantage makes it the default pick; both kits are set up to handle the same job.

