When you're rounding out your rv camper systems accessories, a slide-out seal kit and a camper leveler system can look like they belong in the same cart. In practice, they solve opposite problems. The Black RV Slide Out Seal 018-312-EKD & 018-341 EK protects your slideout from drafts and moisture, while the 3604-2 Camper Leveler System turns uneven campsites into a quick setup job. One is a repair that keeps the weather out; the other is a convenience upgrade that makes parking on sloped ground easier. Which one should go on your rig first?
Quick Verdict
If your slideout seal is cracked, worn, or no longer seating flush, the Black RV Slide Out Seal kit is the clear choice. It includes the 018-312-EKD D seal and the 018-341 EK base seal, and the installation process is straightforward: slide the D seal onto the base and screw it into place.
If your main campsite headache is tilting floors and unlevel trailers, the 3604-2 Camper Leveler System is the more useful buy. It is a universal-fit leveler for trailers and lets you raise the low side in precise 1/2-inch increments up to 4 inches. The 2-pack covers both wheels on the low side.
Side-by-Side Comparison
| Consideration | Black RV Slide Out Seal | 3604-2 Camper Leveler System |
|---|---|---|
| Price | USD 85.99 | USD 162.79 |
| Color | Black | Red |
| What it includes | 018-312-EKD D seal and 018-341 EK base seal | Two leveler blocks with chocks |
| Key dimensions | 018-312-EKD: 1 inch x 15/16 inch x 35 feet; 018-341 EK: 1/2 inch x 2.75 inches x 35 feet | Each unit: 15 x 5.75 x 3 inches |
| Compatibility | RV camper slideout system | Universal fit for trailers; rated up to 30,000 lb and tires up to 32-inch diameter |
| Primary job | Seal the slideout gap | Level the trailer on uneven ground |
Where Each Product Wins
- The slide-out seal kit wins when your immediate problem is weather protection. It closes the gap around the slideout and is the lower-priced option in this comparison.
- The 3604-2 leveler system wins on setup speed and repeatable results. You can dial in a flat floor without stacking boards, and the leveler stores compactly between trips.
- For storage, the leveler set is compact enough for a bay, while the seal kit is a long rubber profile that stays mounted on the slideout after installation.
Product Notes
Black RV Slide Out Seal 018-312-EKD & 018-341 EK
This kit is a direct replacement-style seal for an RV slideout: the 018-312-EKD D seal slides onto the 018-341 EK base seal, and the base screws into place. The dimensions give you a clear way to compare against your current part before you order. The set is new and backed by a money-back-or-replacement after-sales option at the buyer's choice. Choose it when the existing seal is cracked, pulled loose, or letting in drafts. The limitation is that it is a specific seal profile, not a universal gasket, so the model number and photo need to match what's already on your slideout. If you're looking for a one-size-fits-all weatherstripping fix, this kit won't fill that role.
3604-2 Camper Leveler System
The 3604-2 is a two-piece leveling set made for trailers and fifth wheels up to 30,000 lb, with tires up to 32 inches in diameter. You drive onto it, pick the height you need, and set the chocks; it adjusts from 1/2 inch to 4 inches in precise increments. Because it comes as a two-piece 2-pack, both wheels on the low side can be raised together. The set weighs 6.1 lb and is compact enough to store in a bay without taking up much room. Choose it when you level up often and want repeatable results without carrying planks or blocks. The limitation is that it only solves ground-level setup; it does nothing for slideout sealing or weather protection, so it's a companion piece rather than a repair part.
Final Choice by Use Case
- Your slideout seal is cracked or pulling away: Go with the Black RV Slide Out Seal 018-312-EKD & 018-341 EK priced at $85.99. It's the part-focused repair for the gap around your slideout.
- You're tired of stacking boards on sloped campsites: Go with the 3604-2 Camper Leveler System priced at $162.79. It gives you repeatable leveling for heavy trailers and packs away easily.
- You can only add one accessory right now: If protecting the inside of the RV matters more, the seal kit is the necessary fix. If your rig is sealed up but setup on uneven ground is the daily frustration, the leveler system is the upgrade you'll use on every trip.
