How To Seal The Cab And The Cap
How to Choose the Right Rubber Boot Seal
You can get rubber boot material for your special project. This seal is manufactured from robust EPDM synthetic rubber compound and uses a bendable spring steel clip for attaching to any rim. This material is available by the foot. To decide how much you require measure the length around your cab opening. You get several options of rubber to make use of for sealing your cabs together.
Tips for Getting the Right Fit
To determine how much you require measure the length around your cab opening. It is important that both openings are precisely the matching size. Make sure to measure the opening before ordering. Every installation is unique.
Why EPDM Rubber Is the Best Choice for Long-Lasting Seals
The EPDM rubber seal is developed to endure challenging conditions such as cold. It's tailored for both daily use. Compared to low-grade seals, this material offers more protection. It's a solid choice for anyone looking to enhance their truck cab connection with a dependable sealing solution.
How To Seal The Cab And The Cap Features and Benefits
| Feature | Benefit | Use Case |
|---|---|---|
| No Sealant Required | Cleaner installation with easy removal if needed | Perfect for quick and easy installs |
| Fast, Reliable Shipping | Quick turnaround when time-sensitive installs are needed | Helpful for last-minute road trip or show prep |
| U-Channel Orientation Consistency | Both U-shaped edges face the same way for easier installation | Helps avoid confusion during install, especially for beginners |
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
- Can I cut the how to seal the cab and the cap 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.
- I`m about to put a a fiberglass shell on the back of my truck and I`m taking out the back window. I think the fiberglass shell opening is a bigger than the the back window of the truck. will the Accordion Boot or Compression Boot Gasket Material work?
In order for the accordion boot to work in your application both opening must be the exact size. If the opening in the fiberglass shell is smaller you have the option of resizing the opening to fit your rear window opening. If the opening in the fiberglass shell is bigger than the opening in your truck's window opening you are limited to using the compression boot.
- Is it suitable for sealing between an airbag mounted truck cab and the body hard mounted to chassis rails on a truck?
As long as there is some sort of flange or wall to install the boot it should work. The thickness of the flange should not exceed 3/16" (4.7625mm) The accordion design allows for independent movement or flex between the cab bodies.
