Truck Cap Rear Window Seal
Only Buy What You Need - Rubber Boot Material Sold by the Foot
This item is available by the foot. Unlike other organizations that compel you to purchase more than you need. You obtain the precise quantity you require. No waste.
Quick and Easy Installation
Installing this rubber boot is user-friendly and requires minimal tools. Just snap the seal firmly onto the thin wall of the window or pass through opening. This ensures a watertight connection between the two units. Regardless of whether you're camping, this seal blocks debris and ensures cabin integrity during your journey.
Universal Fit: Compatible Rubber Seals for Trucks and Rigs
This rubber boot seal is widely used in vehicle sealing applications. It's compatible with most compact trucks. Whether you're upgrading a camper shell or building a custom rig, this seal offers versatile fitment and dependable performance for your cab connection project.
Truck Cap Rear Window Seal Features and Benefits
| Feature | Benefit | Use Case |
|---|---|---|
| Embedded Steel Spring Clip | Maintains a secure grip on flanges without adhesive | Stable connection between cab and shell |
| Trusted by Pros and DIYers | Field-tested by thousands in real-world applications | Confidence in product from verified reviews and installs |
| Supports Walk-Through Conversions | Lets you convert separate spaces into one continuous interior | Used in van builds, campers, and custom sleeper cabs |
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
- What if the camper shell opening is larger than my truck window?
If the shell opening is larger, the truck cap rear window 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.
- Can I cut the truck cap rear window seal to fit around a third brake light?
No, cutting is not recommended. Instead, remove the brake light and cover the hole, or change how the boot is mounted if you need to preserve the light.
- Does the truck cap rear window 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.
