Our Customer Service hours are:
Monday - Friday: 9am - 5:30pm EST

Flex Seal

<p>Flex Caulk is a high-performance, hybrid polymer caulk that can handle a wide array of applications. Our Trigger Flow Nozzle&#x2122; allows you to control the flow, making it perfect for hard-to-reach places.</p>

Flex Caulk is a high-performance, hybrid polymer caulk that can handle a wide array of applications. Our Trigger Flow Nozzle™ allows you to control the flow, making it perfect for hard-to-reach places.

What Is Flex Caulk?

Frequently Asked Questions

Flex Caulk

Flex Caulk How-To

Flex Caulk Reference Guide

Flex Seal Spray How-To

Flex Seal Spray Reference Guide

Flex Seal Spray

Flex Seal Liquid How-To

Flex Seal Liquid Reference Guide

Flex Seal Liquid

Flex Paste How-To

Flex Paste Reference Guide

Flex Paste

Flex Glue How-To

Flex Glue Reference Guide

Flex Glue

Flex Tape How-To

Flex Tape Reference Guide

Flex Tape

Flex Shot How-To

Flex Shot Reference Guide

Flex Shot

Flex Super Glue How-To

Removing Flex Super Glue

Flex Super Glue Liquid Reference Guide

Flex Super Glue Gel Reference Guide

Flex Super Glue Removal and First Aid

Reference Guides

Flex Super Glue

Flex Super Wide Duct Tape How-To

Flex Super Wide Duct Tape

Flex Adhesive Remover How-To

Flex Adhesive Remover Reference Guide

Flex Adhesive Remover

Flood How-Tos

Flood Protection

How-Tos

Do I Need a Caulking Gun?

Is it Important to Read ALL the Directions before using Flex Caulk?

Is Flex Caulk Chemical, UV, and Mildew Resistant?

What Are Some Recommended Applications for Flex Caulk?

To What Surfaces Can I Apply Flex Caulk?

How Much Will One Container of Flex Caulk Cover?

Can Flex Caulk Be Applied to Wet Surfaces?

How Do I Prepare the Surface?

How Do I Control the Bead Size?

How Do I Open Flex Caulk?

Do I Need to Cut the Nozzle?

Can I Paint Flex Caulk?

At What Temperatures Can Flex Caulk Be Applied?

How Long Do I Have to Tool / Smooth It?

How Do I Clean Uncured Flex Caulk?

How Long Does It Take to Cure?

How Do I Remove Flex Caulk once Cured?

In What Sizes and Colors Can I Purchase Flex Caulk?

Why is My Can of Flex Caulk Not Working?

How Do I Store Flex Caulk?

What is the Shelf Life of Flex Caulk?

Will Flex Caulk Shrink?

Does Flex Caulk Have a Smell / Odor?

Is Flex Caulk Safe for Use Around Drinking Water and Food?

What's the Difference Between Flex Caulk and Flex Shot?

How Do I Know My Can of Flex Caulk is Empty?

What are Some Best Practices for Application?

What is Flex Seal Spray?

In What Temperatures Can I Apply it?

Can I Apply It on a Wet Surface?

How Long Does It Take to Dry?

How Long Will It Last?

How Much Pressure Will It Withstand?

How Much Will One Can of It Cover?

Can I Use Flex Seal Spray on Vinyl Pools and Pool Liners?

Can I Paint It on or Brush It on Instead of Spraying?

Is Flex Seal Food Grade/Food Safe?

Can I Use It to Seal the Inside of a Water Tank Used for Drinking?

Can I Use It to Fix Radiators, Tires or Other Areas With Extreme Heat and Pressure?

Can I Use It on a Gasoline Tank?

What is the Recommended Storage Temperature for It?

Is Flex Seal Clear the Same Formula as Flex Seal Original and Brite?

In What Sizes and Colors is Flex Seal Available?

What is Flex Seal Liquid?

In What Temperatures Can I Apply Flex Seal Liquid?

Can I Apply It on a Wet Surface or When it’s Raining?

Will it Expand and Contract in the Summer and Winter?

Can I Dilute It?

Can I Paint Over It?

Can I Use It on Underfoot Applications?

Can I Use It on the Inside of My Rainwater Barrel?

Can I Use It to Repair a Gasoline Tank?

How Do I Clean It Up?

What is the Recommended Storage Temperature for Flex Seal Liquid?

What Is the Shelf Life of Flex Seal Liquid?

In What Sizes and Colors Can I Get Flex Seal Liquid?

What Is Flex Paste?

Is it Important to Read ALL the Directions Before Using/Opening My Flex Paste?

What Projects Can I Use Flex Paste For?

Can I Use Flex Paste as a Sealant?

What Surfaces Can I Use Flex Paste On?

Can I Use Flex Paste on a Wet Surface or Underwater?

Is Flex Paste Chemical, UV, and Mildew Resistant?

Will Flex Paste Shrink?

How Do I Apply Flex Paste?

In What Temperatures Can I Apply Flex Paste?

Can I Smooth or Tool It Once It Has Been Applied?

How Long Should I Wait to Apply a Second Coat of Flex Paste?

How Long Does It Take to Fully Cure?

Once Cured, Does Flex Paste Remain Flexible?

How Long Does Flex Paste Last?

Can Flex Paste Be Painted?

Can Flex Paste be Sanded?

Does It Have an Odor?

Can I Dilute Flex Paste?

How Do I Remove Flex Paste?

Is Flex Paste Food Grade/Food Safe?

Can I Use This on Drinking Water, Rain Barrels, Fish Tanks, etc.?

How Do I Preserve Flex Paste?

I Lost My Protective Foil. What Should I Do?

What is the Recommended Storage Temperature for Flex Paste?

How Much Coverage does One Can of Flex Paste Provide?

In What Sizes and Colors Can I Purchase Flex Paste?

What is the Maximum Pressure Flex Paste can Withstand?

Can I Use This to Repair a Gasoline Tank?

Can Flex Paste be Used with Electrical Wires?

What Is Flex Glue?

What is the Difference Between Flex Glue in the Squeeze Tube vs. the Pro Formula Cartridge?

In What Temperature can I Apply Flex Glue?

How Long Does It Take Flex Glue to Fully Cure?

Will Flex Glue Shrink During the Curing Process?

Will Flex Glue Clear Retain Its Clarity Once Fully Cured?

How Do I Clean Up After Using Flex Glue Before It Cures?

Can I Remove Flex Glue Once It's Cured?

Can Flex Glue be Painted?

Can It be Used on Porous Surfaces?

Can Flex Glue be Used Underwater?

Is Flex Glue UV, Mold, and Mildew Resistant?

Is Flex Glue Food Grade/Food Safe?

Can I Use It on Drinking Water, Rain Barrels, Fish Tanks etc.?

How Do I Help Preserve Flex Glue?

What is the Recommended Storage Temperature for Flex Glue?

How Many Linear Feet Can I Get Out From a Tube of Flex Glue?

In What Sizes and Colors Can I Get Flex Glue?

What Is Flex Tape?

In What Temperatures Can I Apply Flex Tape?

What is the Maximum Pressure It Can Withstand?

If I’m Using It to Patch an Above Ground Pool, is it Best to Apply It to the Inside or the Outside of the Pool?

I’m Trying to Adhere It to Fabric, but It’s Not Sticking. Is There Anything I Can Do to Prep the Surface?

Can I Use It on a Container That Holds Water for Drinking?

Can I Use It to Repair and Air Mattress or Inflatable?

Can I Use It to Repair a Car or Bicycle Tire?

Can I Use It on My Radiator Hose?

Can I Use It on a Tank That Holds Gas or Oil?

What is the Recommended Storage Temperature for Flex Tape?

In What Sizes and Colors Can I Get Flex Tape?

What is Flex Shot?

In What Temperatures Can I Apply Flex Shot?

Can I Use It in an Enclosed Space?

Can I Apply It to a Wet Surface?

Can I Paint Over Flex Shot Once It Fully Cures?

How Long Does It Last?

Will It Fade, Dry, Crack, Yellow, or Deteriorate Because of Contact with Household Cleaners?

Can the Extension Tubes Be Cut to Adjust he Thickness of the Bead?

Are the Extension Tubes Reusable?

How Do I Remove the Extension Tube that's Attached to my Can of Flex Shot?

Can I Use It in a Container that Holds Water for Drinking?

Can I Use it to Fix Tires or Other Areas with Extreme Pressure?

What is the Recommended Storage Temperature for Flex Shot?

How Many Linear Feet Can I Get Out of One Can of Flex Shot?

What Is Flex Super Glue?

What is the Difference Between the Liquid and the Gel Flex Super Glue?

Why Do I Need to Shake the Gel Bottle?

In What Temperatures Can I Apply Flex Super Glue?

How Much Flex Super Glue Should I Buy?

How Long does Flex Super Glue Take to Set?

Will Flex Super Glue Bond to Plastics, Vinyl, or Rubbers?

Can I Use Flex Super Glue on a Wet Surface or Underwater?

Can I Paint Over Flex Super Glue?

Can I Use Flex Super Glue on a Vertical Surface?

Is Flex Super Glue Food Safe?

How Do I Remove Flex Super Glue from a Surface?

What Should I Do if I Get My Fingers Stuck Together?

How Should I Store Flex Super Glue?

What is the Difference Between Set and Cure Time?

In What Sizes is Flex Super Glue Available?

What is Flex Super Wide Duct Tape?

How is Flex Super Wide Duct Tape Different from Standard Duct Tape?

At What Temperatures Can I Apply Flex Duct Tape?

What Surfaces Can Flex Duct Tape Be Applied to?

Ho Do I Apply Flex Duct Tape?

How Do I Unroll Flex Duct Tape?

How Do I Tear Flex Duct Tape?

Can I Remove and Reapply Flex Duct Tape?

How Do I Store Flex Duct Tape?

Is Flex Duct Tape Water Resistant?

Can I Apply Flex Duct Tape on a Wet Surface or Underwater?

Is Flex Duct Tape Food Safe?

Can I Paint Over Flex Duct Tape?

What Is Flex Caulk?Updated a year ago