Sealant Tape


Flex Seal Family of Products (Swift Response, LLC)

Verify ID:


Expiration date:

September 23, 2021 - September 22, 2024

Verification Mark

Product Information

Flex Tape® is a super strong, rubberized waterproof tape that instantly seals out water, air and moisture to create a super strong, watertight, flexible barrier. Flex Tape can patch, bond, seal and repair virtually anything and even works underwater!



Flex Tape is perfect for:

  • Sealing out air and water
  • General home repairs
  • Fast repairs on your boat, auto or RV
  • Roof repairs
  • Pool repairs
  • Bath and shower 
  • Other DIY projects

* This information was provided by Flex Seal Family of Products (Swift Response, LLC) and may contain additional information outside the scope of this Claim Verification.

Applicable To:

Flex Tape®

Marketing Claim Verified by UL Solutions

Retains 100% bond strength after exposure to high temperature, water, and household bleach. See UL Verify for details.

Verification Method

Protocol: ASTM D 903 U-bend peel strength testing using cross head speed of 6.0 inches per minute. Tests were conducted using sealant tape applied to aluminum and unpainted plywood substrates lightly sanded prior to sample preparation to remove any surface contaminants. Baseline (as- received) samples were conditioned for a minimum of 40 hrs. at 73°F (23C) and 50% relative humidity. High temperature samples were conditioned at 194°F (90C) for 4 months (2976 hrs.) Water exposed samples were immersed in water maintained at 158°F (70°C) for 7 days. Household cleaner exposed samples were immersed in 100% bleach cleanup solution at 73°F (23C) for 7 days.

About the Company

Swift Response, AKA the Flex Seal® Family of Products, is an industry leader in providing a variety of DIY home repair and maintenance products with emphasis in waterproofing, adhesive, bonding and sealing. To find out more visit Please follow us on Instagram Facebook Twitter LinkedIn YouTube Tik-Tok

What is UL Verification?

UL Verification is an objective, science-based assessment that confirms the accuracy of marketing claims. Our independent assessment process scrutinizes the validity of specific advertising or promotional statements, giving you a way to separate verified fact from fiction.