Sleeper Cap Seal
How to Choose the Right Rubber Boot Seal
You can get rubber boot material for your special project. This seal is manufactured from hard-wearing EPDM synthetic rubber compound and incorporates a bendable spring steel clip for affixing to any flange. This material is available by the foot. To find how much you need measure the length encircling your cab opening. You get 3 alternatives of rubber to employ for sealing your cabs together.
Quick and Easy Installation
Installing this rubber boot is user-friendly and requires minimal tools. Just snap the seal firmly onto the lip of the window or pass through opening. This provides a weatherproof connection between the two units. Whether you're hauling, this seal prevents wind and helps temperature control during your journey.
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 excels due to its premium construction and real-world reliability. We focus on providing products that exceed your expectations for long-term durability. Don't settle for inferior seals, upgrade to one that's built to last.
Sleeper 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 |
| Weather-Tested Seal | Handles rainstorms without leaks or performance loss | Reliable weather barrier for daily-use trucks or RVs |
| 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
- Will the sleeper cap seal work on a walk-through truck conversion?
Yes! This is a perfect use case. The sleeper cap seal allows you to join the truck cab and camper shell or utility box with a weather-sealed, flexible connection.
- Can I order a sample of the sleeper cap seal ?
Yes, you can order a sample pack that includes all boot types. It’s a great way to test fit and feel before committing to a full-length order.
- Do I need glue to install the accordion boot?
The rubber boot does not require glue for installation. It has a spring clip embedded in the rubber. When the boot is placed over a flange, the clip squeezes the rubber securely. The only optional gluing is at the seam using cyanoacrylate (SuperGlue). Avoid petroleum-based adhesives like rubber cement.