Truck Cap Sliding Window Seal Window Seal
How to Choose the Right Rubber Boot Seal
You can obtain rubber boot material for your special project. This seal is manufactured from tough EPDM synthetic rubber substance and has a bendable spring steel clip for affixing to any flange. This material is sold by the foot. To determine how much you require measure the length encircling your cab opening. You get 3 choices of rubber to apply for sealing your cabs together.
Tips for Getting the Right Fit
To ascertain how much you need measure the distance around your cab opening. It is vital that both openings are precisely the matching size. Make sure to measure the opening before ordering. Every installation is unique.
Don't Settle for Less: Upgrade to a Seal Built for the Road
Choosing the right seal is key for your vehicle project. This rubber boot stands out due to its superior construction and real-world reliability. We pride ourselves on providing products that surpass your expectations for long-term performance. Don't settle for cheap seals, upgrade to one that's built to last.
Truck Cap Sliding Window Seal Window Seal Features and Benefits
| Feature | Benefit | Use Case |
|---|---|---|
| No Sealant Required | Cleaner installation with easy removal if needed | Perfect for quick and easy installs |
| Supports Walk-Through Conversions | Lets you convert separate spaces into one continuous interior | Used in van builds, campers, and custom sleeper cabs |
| Multi-Vehicle Fit | Works on trucks, vans, semi cabs, and custom enclosures | Versatile for commercial and recreational conversions |
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
In Stock
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.
$8.25 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
- Does the boot stretch or compress?
Yes, the accordion-style folds allow for both stretching and compression, ideal for movement and flex between vehicle sections.
- What is the purpose of a truck cap sliding window seal window seal?
A truck cap sliding window seal window sealprovides a sealed, flexible connection between the cab and camper shell, allowing access and preventing leaks, dust, and wind from entering.
- Can you make the accordion gasket in different colors?
Sorry the boot only comes in black. We have never tested it, but the rubber is epdm and with the right paint is can be colored. From the research the recommended paint should be an acrylic coating specifically designed for epdm rubber. Usually this is paint for roofing. Latex paint should be avoided.
