Rv Window Cap Seal
How to Choose the Right Rubber Boot Seal
You can get rubber boot material to replace old worn out rubber. This seal is manufactured from heavy-duty EPDM synthetic rubber compound and uses a flexible spring steel clip for fastening to any rim. This material is sold by the foot. To ascertain how much you need measure the distance around your cab opening. You have several choices of rubber to make use of for waterproofing your cabs together.
Quick and Easy Installation
Installing this rubber boot is hassle-free and requires minimal tools. Just clip the seal firmly onto the lip of the window or pass through opening. This forms a watertight connection between the two units. Whether you're adventuring, this seal blocks rain and ensures cabin integrity during your journey.
Universal Fit: Compatible Rubber Seals for Trucks and Rigs
This rubber boot seal is frequently used in vehicle sealing applications. It's works with most mid-size trucks. Whether you're repairing a camper shell or building a custom rig, this seal offers versatile fitment and dependable performance for your cab connection project.
Rv Window Cap Seal Features and Benefits
| Feature | Benefit | Use Case |
|---|---|---|
| Aesthetic Finish | Clean, professional appearance enhances your build’s look | Great for show rigs, restorations, or resale appeal |
| No Sealant Required | Cleaner installation with easy removal if needed | Perfect for quick and easy installs |
| Weather-Tested Seal | Handles rainstorms without leaks or performance loss | Reliable weather barrier for daily-use trucks or RVs |
Order Form
To begin your order just enter the total amount of feet of boot material you need in the appropriate box next to the item you want to order below. Check your entries then click on the "Order Now " button.
Accordion Boot - Part Number 541
The accordion boot is designed for cabs where you take out the truck window. This product works best with fiberglass shells that are 1/8" to 3/16" thick. Please note that both openings must be exactly the same size for this boot to fit properly.
$8.95 per foot
In Stock
Order 541
- Enter the total amount of feet of boot material you need in the text box
- Check your entries, then click on the "Order Now" button.
Compression Boot - Part Number 540
Use this seal when you leave the rear slider window in the truck. This product works best with fiberglass shells that are 1/8" to 3/16" thick. You will also use this boot if the opening in the fiberglass shell is much larger than the opening in your truck.
$7.95 per foot
In Stock
Order 540
- Enter the total amount of feet of boot material you need in the text box
- Check your entries, then click on the "Order Now" button.
Extra Wide Accordion Boot - Part Number 543
The extra wide accordion boot is designed applications where you have a large gap between the space you want to seal. This product works best with fiberglass shells or sheet metal flange that are 1/8" to 3/16" thick. Both openings must be exactly the same size for this boot to fit properly.
$11.50 per foot
In Stock
Order 543
- Enter the total amount of feet of boot material you need in the text box
- Check your entries, then click on the "Order Now" button.
Accordion Boot - Ultra Wide 10" Part Number 544
The Ultra Wide 10 Inch accordion boot is designed for very wide gaps between cabs.. This product works best with fiberglass shells that are 1/8" to 3/16" thick. Please note that both openings must be exactly the same size for this boot to fit properly.
$13.90 per foot
In Stock
Order 544
- Enter the total amount of feet of boot material you need in the text box
- Check your entries, then click on the "Order Now" button.
Accordion Boot 15 - Part Number 546
The Accordion Boot 15 is designed applications where you have a large gap between the space you want to seal. This product works best with fiberglass shells or sheet metal flange that are 1/8" to 3/16" thick. Both openings must be exactly the same size for this boot to fit properly.
$16.50 per foot
Due to high demand for this product it is currently backordered.
Estimated availability July 22, 2025
Note: You can still place an order. Orders will ship when available.
Order 546
- Enter the total amount of feet of boot material you need in the text box
- Check your entries, then click on the "Order Now" button.
Compression Bulb Seal - Part Number 545
Use this seal when you leave the rear slider window in the truck. This product works best with fiberglass shells that are 1/8" to 3/16" thick. You will also use this boot if the opening in the fiberglass shell is much larger than the opening in your truck.
$7.95 per foot
In Stock
Order 545
- Enter the total amount of feet of boot material you need in the text box
- Check your entries, then click on the "Order Now" button.
Frequently Asked Questions
- Can I order a custom lengths?
Yes, because we sell the material by the foot we can provide the exact lenght you need for your project. You can also contact us if you need help finding the right length.
- What if the camper shell opening is larger than my truck window?
If the shell opening is larger, the rv window cap seal may not work. You’ll either need to modify the opening or consider a compression boot instead, which is more forgiving in such situations.
- Does the rv window cap seal allow for movement between the truck and camper?
Yes, the accordion-style folds are designed to flex, allowing for some movement and vibration without breaking the seal.