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

$ 35.95

Score By Feature

Based on 226 ratings

Easy to install

9.33

Adhesion

9.10

Value for money

9.08

OveReview Final Score

How Our Score Is Calculated

Product Description

By entering your model number, you can make sure that this fits.

20 feet for mounting a truck cap or camper shell on a truck with extra wide bed rails and a payload of more than 200 pounds. Purchase ASIN: B00BNGBXOC for beds that are 8 feet long.

Fills in all of the gaps between the bed rails. Seal, butyl tape, alcohol pads, and detailed instructions are all included in the complete kit.

EPDM rubber that is high in quality and lasts a long time. Professional installers prefer it to PVC/foam seals.

For maximum service life and vibration absorption, excellent compression set resistance is required.

This seal does not need to be replaced every time your cap is taken off.

Questions & Answers

Is this something that can be done with aluminum camper shells? Will the adhesive be applied to the shell instead of the rail if this happens?

The shell should have the seal attached to it. Clean the area at the bottom of the shell where the seal is attached thoroughly. You might need to use a little more sealant in the corners. It would be impractical to apply the seal to the bed rail because it would be damaged if the truck was used without the shell.

Is this a seal that goes on the truck or on the cap?

It's suggested that you attach it to your cap.

Is this applicable to any truck with a fiberglass shell, or is it only for certain vehicles?

It will work with any truck and cap combination. I've used it on a 2013 F150 with a leer camper shell as well as a 1980 Plymouth Trailduster with a removable hard top. Both have a great fit.

Has anyone tried it on a hard tonneau cover like the undercover?

A flat EPDM profile, such as the Premium Truck Cap Seal item B00NCCX6C2, is a better alternative.

Selected User Reviews For 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

The cap seal is excellent, but it is a little pricey

5/5

The great seal followed the instructions and flipped the cap over. I used isopropyl alcohol after cleaning with alcohol. Three wipes were provided, but that wasn't enough. This was mounted on a truck topper with a 6 inch diameter. There was a lot to do on the sides and front of a 5 ft bed. It appears to be a good seal because the pad is thick. The only way to know is to wait and see. It's a good product, but it's a little on the pricey side for what you get.

Elise Love

| Dec 19, 2021

It really works

5/5

The original basic foam seal with my bed cap always leaked and was just junk, so I installed this seal on a warmer day and it stuck to the cap insanely well, and I no longer have any leaks. This seal kit has made me very happy.

Laylani Rocha

| Jan 12, 2022

It feels like high-quality material and has a good adhesive; I just put it on a custom topper and it looks great

5/5

The material appears to be of good quality, and the adhesive, despite being thin, appears to be quite sticky. It came with cleaning pads and simple instructions that were helpful in cutting corners, which shouldn't matter too much given that it will be compressed for the majority of its life. I haven't tested it on my truck yet, but given how thick and spongy it is, I'm confident it will hold up.

Lennox Bullock

| Dec 13, 2021

Most of my time was spent working

4/5

This seal was installed on the camper shell of my Dodge Ram 1500. Even though the directions were carefully followed, there are some leaks at the corners. It's a step forward from what I had before, but there must be a way to improve the way the corners seal.

Ahmed Marks

| Oct 10, 2021

This is a real product

5/5

The three rows of protection are appealing to me. It shows on the side, which is fine because I won't have any more paint damage on my truck rails once I remove the camper. I installed this shell on my own, so I wasn't able to turn it over for perfect placement, but it worked out.

Oakleigh Avila

| Feb 04, 2021

Ugh, there's not a lot of stickiness here

3/5

This appears to be a great product with clear instructions, but the adhesive is completely flaking off. Regrettably, this would have made it the best product for this application by far.

Leslie Riggs

| Jan 05, 2022

I've struggled to seal caps on my pickup for the last three winters in the mountains and rainy pnw, and this is the best product I've found

5/5

This seal is by far the most effective I've ever used. I would strongly suggest it.

Fernanda Sullivan

| May 07, 2021

It did exactly what it said it would do

5/5

On a Snug-It, I replaced a broken seal. Shell on top (Chevy 6). This one comes with a 5' Fleet side bed. To eliminate squeaks and protect against the elements, a good seal is necessary. I had about 6 inches left when I was finished.