Extang® 1140 - MaxSeal™ Tailgate Seal

4.55 reviews / Item # mpn1907118 View Similar Products
In Stock - Ships in 24 to 48 hrs
Universal Fit
Fitment Notes:
  • Not Vehicle Specific
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Product Details

Stainless Steel Accessories

Universal MaxSeal™ Tailgate Seal (1140) by Extang®. 1 Piece. Dimensions: 102" Length. However great the Extang tonneau covers are designed, they need a little bit of help to fully protect your truck bed from dust and water. It is all because of the gaps between the tailgate and bed. That's why if you want to take full advantage of your Extang tonno, you need to seal the tailgate. The MaxSeal will easily do the job and keep your covered bed dry and clean.


  • Universal fit
  • Provides a tight seal between the tailgate and bed
  • Made of EPDM industrial high-strength rubber
  • Do-it-yourself installation - just cut, peel and stick
  • Strong 3M acrylic foam tape

This strong and flexible tailgate seal is a must for all trucks with a tonneau cover, topper, or lid. It keeps moisture and dust out of the truck bed and makes it as snug as a regular car trunk. The MaxSeal is manufactured of all-weather EPDM rubber that is highly resistant to UV, gas, and oil. So be sure, the seal will serve you for years to come. Perhaps the best thing about this seal is that it features universal fit, so you just cut it to the length you need, then peel off the backing paper to expose the adhesive, and sick the seal where it belongs to. You'll be ready to head off in minutes.

For over 30 years, Extang Inc. has been a leading North American manufacturer delivering a wealth of heavy-duty truck bed tonneau covers and accessories. Headquartered in Ann Arbor, Michigan, the company is relentlessly striving to bring products that provide significant benefits and cause no damage to your pickup truck. Every Extang tonneau cover is designed to enhance utility, convenience, and appearance of your vehicle in a matter of few minutes. The covers are capable of withstanding extreme weather conditions, keeping water and dust out of the truck bed. The list of benefits offered by the Extang tonneau covers goes and on, and no wonder why – this brand holds more patents than any other brand in the industry. Perhaps that is why Extang is considered to be America's number one manufacturer of tonneau covers.

Part Number:

Warranty Information

Lifetime Frame & Tarp: The Revolution Tonno, Express Tonno, Trifecta and eMAX Tonno carry a lifetime warranty against defective materials or workmanship on all tonneau rails, aluminum components, clamps, bows, hardware and vinyl covering.

Lifetime Frame & 10-Year Tarp: The Classic Platinum, BlackMax, FullTilt and Tuff Tonno carry a lifetime warranty against defective materials or workmanship on all tonneau rails, aluminum components, clamps, bows, hardware. And a 10-year warranty against defective materials or workmanship on the vinyl covering.

The Solid Fold and EnCore carry a three-year warranty against defective materials or workmanship on all tonneau rails, aluminum components, clamps, bows, hardware.

This warranty is against defective materials or workmanship. The warranty is void if the product has been damaged by accident, unreasonable use, neglect, improper service/installation/removal, modifications, acts of God, normal wear and tear or other causes not arising out of defective materials or workmanship. Consequential and incidental damages are not covered under this warranty.

Wind whip damage: Tarps must be secured at all points when vehicle is in motion. An unsecured tarp will flap, resulting in damage to the fabric.

Improper cleaning: It is recommended to use the tested and approved Extang Tonno Tonic or clean with soap and water only. Do not use vinyl conditioners (i.e. Armor All) because they will shrink the vinyl.

Overloading of cargo: Cargo should not touch the tonneau at any point. Protrusions in the tarp will stress the fabric. Cargo may shift while traveling and cause it to push against the fabric or panels and damage it.

Driving with panels open or improperly secured on all folding tonneaus: Prior to vehicle operation, clamps must be tightly secured so that clamp lips tightly grip the inner bedside metal surface. Open position: Tonneau must be completely folded and secured with BOTH buckles. Closed position: Tonneau must be completely flat and secured at all 4 clamps.

Opening panels without removal of debris on all folding tonneaus: Top of tonneau MUST be free of foreign material including snow and ice before opening panels or severe damage may result.

Towing: Do NOT tow your vehicle from the rear with any Extang tonneau cover on your truck.

The warranty applies to the original consumer/purchaser. Warranty registration must be on file and/or proof of original purchase (detailed and dated receipt) required for warranty to be effective. Warranty coverage starts from the date of purchase.

PERFORMANCE: Provided all warranty conditions are met, Extang will either repair or replace (at Extang's option) the product or component. This warranty gives you specific legal rights and you may also have other legal rights which vary from state to state.

Magnuson-Moss Warranty Act:
Legally, a vehicle manufacturer cannot void the warranty on a vehicle due to an aftermarket part unless they can prove that the aftermarket part caused or contributed to the failure in the vehicle (per the Magnuson Moss Warranty Act (15 U.S.C. 2302(C)) Learn More

Vehicle Fitment

This part is universal

Product Reviews


Every Customer can leave a review about our service and the product that was purchased. In order to leave your review for your new product, please follow the link in the email you receive after completing your purchase. You can rate appearance, ease of installation, price/value and product quality.

Extang® - MaxSeal™ Tailgate Seal
Extang® 1140 - MaxSeal™ Tailgate Seal
Average Rating: 4.7 of 5
5 of 5
Accurate Description Of Product
Extang® 1140 - MaxSeal™ Tailgate Seal
Product was just as advertised. Fit with no modifications, just trimming to fit. Adhesive tape is very strong but you can adjust. Arrived on time, very low price for value product.
DPosted by (Suwanee, GA) /
Was this review helpful for you? Yes
4.8 of 5
Tailgate Seal
Extang® 1140 - MaxSeal™ Tailgate Seal
Product works very well at sealing out the weather. Not difficult to install.
SPosted by (Belleville, IL) /
2012 Chevy Silverado
Was this review helpful for you? Yes
5 of 5
Tailgate Seal
Extang® 1140 - MaxSeal™ Tailgate Seal
Easy to install, nice appearance.
TPosted by (Kenner, LA) /
Was this review helpful for you? Yes
3.5 of 5
Extang Tailgate Seal
Extang® 1140 - MaxSeal™ Tailgate Seal
The Extang Maxseal tailgate is advertised as being 12 feet long but when I measured the seal out of the package, it was only 10 feet long. There is enough to do the job, but somebody needs to change the advertised size. Thank You. Bob.
RPosted by (Modesto, CA) /
Was this review helpful for you? Yes
5 of 5
Good Seal
Extang® 1140 - MaxSeal™ Tailgate Seal
Easy to install. The directions are good. We used our own bottle of alcohol to clean truck surface. The Ram tailgate has lots of gap between sidewalls.
CPosted by (Kent, WA) /
Was this review helpful for you? Yes

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