Flex Seal MAX Liquid Rubber Sealant Coating White 2.5 Gallon for Waterproofing and Sealing Large Areas
Flex Seal MAX Liquid Rubber Sealant Coating, 2.5 Gallon, White
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Flex Seal MAX Liquid Rubber Sealant Coating, 2.5 Gallon, White

448 ratings
Flex Seal MAX Liquid Rubber Sealant Coating, 2.5 Gallon, WhiteFlex Seal MAX Liquid Rubber Sealant Coating 2 5 Gallon WhiteFlex Seal MAX Liquid Rubber Sealant Coating 2 5 Gallon Black
Actual ColorWhite

Key item features

  • Versatile Application: Thick rubberized liquid that you can brush, roll, dip, or pour
  • Watertight Seal: Dries to a watertight, airtight, flexible, rubberized coating
  • Large Coverage: Perfect for covering large surface areas
  • Durable Protection: Mildew, chemical, and UV resistant
  • Convenient Size: Comes in a larger 2.5 gallon size with a resealable easy pour spout
  • Non-Toxic: Contains no harmful vapors, making it safe to use
  • Weatherproof: Seals and protects surfaces from the elements and extreme temperatures
  • Multi-Purpose: Ideal for use on roofs, gutters, floors, basements, and more
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Specs

Industrial sealant type, Rubber SealantRec. use, Seal Joints, WindowRecommended surface, FloorDry time, 2 minRec location, Indoor and OutdoorBrand, Flex Seal

About this item

Product details

Cover huge areas with a flexible waterproof seal, with new Flex Seal Liquid Max. Our larger 2.5 gallon size is made for bigger jobs, and comes with a convenient, resealable easy pour spout.Flex Seal Liquid is liquid rubber, in a can. Unlike traditional paints, Flex Seal Liquid starts out as a thick liquid, that can seep into cracks and holes to form a waterproof, weatherproof rubberized seal. Easy to use, you can brush on, roll, dip or pour to stop leaks fast. Flex Seal Liquid can be used for a variety of coating and sealant applications. Flex Seal Liquid goes on smooth and covers fast, sealing out water, air and moisture. Flex Seal Liquid is non-toxic, no harmful vapors. UV, chemical, and mildew resistant. Flex Seal Liquid seals and protects surfaces from the elements, and extreme temperatures. Flex Seal Liquid is perfect to use all around the house, from roofs and gutters down to floors and basements. Flex Seal Liquid Max is available in black white.

  • Thick rubberized liquid that you can brush, roll, dip, or pour
  • Dries to a watertight, airtight, flexible, rubberized coating
  • Perfect for covering large surface areas
  • Mildew, chemical and UV resistant
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Specifications

Industrial sealant type

Rubber Sealant

Rec. use

Seal Joints, Window

Recommended surface

Floor

Dry time

2 min

Warranty

Warranty information

1

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Warranty url

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Customer ratings & reviews

4.5 out of 5 stars
stars
448 ratings293 reviews
Includes global ratings and reviews
How item rating is calculated
  1. 5 stars76% (342)
  2. 4 stars11% (48)
  3. 3 stars5% (22)
  4. 2 stars1% (6)
  5. 1 star7% (30)

Reviews summary

Pros

  • : Fills small cracks and crevices immediately.
  • : Can stretch to accommodate movement.
  • : Application process is straightforward with a brush or pouring.
  • : Forms a seal to stop leaks in various surfaces and applications.
  • : Effectively prevents water entry during rain.

Neutral

  • : Can be effective, but varies by surface type.
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Showing 1-3 of 293 reviews

May 17, 2025
Reviewer name: jimi
Item details
Color: White
Sold and shipped byNutrend Automotive Inc.
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

Delivered on time

Helpful?2MK9GBITJ3H7742891630
Nov 5, 2026
Reviewer name: WalmartCustomer
Item details
Color: White
Sold bySports-Med
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

Walmart had the best price of all retailers. Delivered on time.

Incentivized Review
Helpful?2MK9GBITJ3H7742891630
Aug 21, 2024
Reviewer name: Brian
Item details
Color: White
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

flex seal

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Helpful?2MK9GBITJ3H7742891630
Current price is Now $199.00
You save $40.87
was $239.87
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Sold and shipped by Partners Choice
3.8 out of 5 stars
3.8 stars out of 5, based on 20 seller reviews(3.8)
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