ESI Super Cap Seal XL 20 FT (2 1/8" Width x 1/2" Height x 20' Length) EPDM Rubber for Caps Over 200 lbs

This cap seal is wider than my original and thicker too - big plus. It is made of very sturdy rubber and has not leaked since installed months ago. Installation was easy. The adhesive backing held the seal in place as I positioned the cap over the be rails. I was careful to drop the cap straight down so I wasn't sliding it around on the seal. The length of the seal was well more then enough for a 6' truck bed.

I camp in the back of my truck, having installed fabric on mostly everything, waterproofing is a huge issue, no one likes waking up to a wet sleeping bag after a night of rain! After trying a handful of other weather stripping and truck bed seal products, I think I've finally found something that works. When I held the roll in my hand I knew it was a quality product, plenty heavy and a high quality feel. The product maintains its "sponge" when sealed under the truck cap, unlike a weather stripping product which inevitably compresses to a thin strip of nothing. The added bit of butyl-rubber type compound (think sticky-tack) is a great addition for cramming into those tiny holes and corners which are otherwise impossible to fill. Make sure you clean the mating surface with alcohol or acetone to get the best results, I found the small alcohol pads weren't quite enough, but that they added them to the kit at all was a nice touch, everyones got some rubbing alcohol laying around the house anyways. SO happy with this great stuff, well worth the price.

Seals great

I have had enough of the flimsy foam tape "seals." I have a heavy fiberclass high top type of cap, and have never had as water tight a seal as this. I live in the Land of Filtered Light with plenty of rain and snow. When I installed this, I adhered it to the bed rail instead of the cap and used the supplied putty to seal the corners. I know this sounds wrong, but a few weeks after I installed it I was in an accident and the shop had to remove the cap and truck bed. I told the shop to order another one of these seals, but in the end it was not needed. The seal was still good and the cap has not leaked since. I also love the design of this. The three rubber ridges create two channels between the outside of the cap and the inside. If any water were to make it through the first ridge, it gets channeled away. If it makes it through the second ridge--unlikely--there is another channel before the third ridge. Great design!

Works great for heavy fiberglass covers, good and sticky, seals great.