Truck Cap Window Seal
Only Buy What You Need - Rubber Boot Material Sold by the Foot
This material is purchased by the foot. Unlike other organizations that require you to buy more than you need. You purchase the exact quantity you need. No overage.
Quick and Easy Installation
Installing this rubber boot is user-friendly and can be done with few tools. Just press the seal firmly onto the rim of the window or pass through opening. This provides a secure connection between the two units. Whether you're adventuring, this seal blocks wind and ensures cabin integrity during your journey.
Universal Fit: Compatible Rubber Seals for Trucks and Rigs
This rubber boot seal is widely used in cab pass-through conversions. It's suitable for most mini trucks. Whether you're upgrading a camper shell or building a bespoke rig, this seal offers flexible fitment and dependable performance for your cab connection project.
Truck Cap Window Seal Features and Benefits
| Feature | Benefit | Use Case |
|---|---|---|
| Compressed and Expanded Flex | Adapts to body movement and misalignments | Maintains seal during travel, loading, or frame shifts |
| U-Channel Orientation Consistency | Both U-shaped edges face the same way for easier installation | Helps avoid confusion during install, especially for beginners |
| Powder-Coated Friendly Channel | Seals well even on painted or coated surfaces | Ensures compatibility with modified or custom trucks |
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.
$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
- Will the truck cap window seal work on a walk-through truck conversion?
Yes! This is a perfect use case. The truck cap window seal allows you to join the truck cab and camper shell or utility box with a weather-sealed, flexible connection.
- Will the truck cap window seal work with thin metal or wood frames?
Yes, but there must be a flange no thicker than 3/16". For wood or thick materials, add a metal strip (like aluminum flat bar) around the opening for the truck cap window sealto grip.
- Can I get samples of the boot?
Yes, we offer a sample pack that includes each of the boot styles. Getting a sample will help you know and understand how the boot installs and attaches to your vehicle or special project. To order a sample pack go to Boot Sample