(3 pack) Black Jack Leak Stopper Rubber Flexx, 15 oz Waterproof Flexible Industrial Sealant, Black, 1 Piece
(3 pack) Black Jack Leak Stopper Rubber Flexx, 15 oz Waterproof Flexible Industrial Sealant, Black, 1 Piece
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(3 pack) Black Jack Leak Stopper Rubber Flexx, 15 oz Waterproof Flexible Industrial Sealant, Black, 1 Piece

4 stars out of 146 reviews
(4.0)|
146 ratings
(3 pack) Black Jack Leak Stopper Rubber Flexx, 15 oz Waterproof Flexible Industrial Sealant, Black, 1 Piece3 pack Leak Stopper Rubber Flexx 15oz Waterproof Repair Sealant Spray Black 1 PackLeak Stopper Rubber Flexx 15oz Waterproof Repair Sealant Spray Black 1 Pack
Pack Size:3 Pack

Key item features

  • Versatile Repair Solution: This flexible sealant is engineered for fast, effective repairs across a wide range of surfaces, including gutters, pipes, roofs, skylights, flashings, and windows.
  • Durable Rubberized Finish: The rubberized coating remains pliable after application, allowing it to expand and contract with surface movements, ideal for withstanding temperature changes.
  • Crack-Resistant Formula: Specially formulated to resist cracking, peeling, and other signs of aging, ensuring long-lasting protection and reducing the need for repeat applications.
  • Quick Drying: Dries to the touch in just 10 minutes and fully cures within 6 hours, allowing for faster project completion and less downtime.
  • Professional Appearance: Available in a clean black color, the sealant offers a professional look that blends well with many materials, especially dark roofing, piping, or flashing components.
  • Waterproof Seal: Creates a waterproof seal that withstands a range of temperatures, making it suitable for various repair needs.
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Current price is Now $30.46
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was $38.91
$10.15/ea
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Columbus, 43215
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This item includes:

  • 3-pack of Black Jack Leak Stopper Rubber Flexx, 15 oz Waterproof Flexible Industrial Sealant, Black, 1 Piece
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About this item

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Customer ratings & reviews

4 out of 5 stars
stars146 ratings53 reviews
How item rating is calculated
  1. 5 stars59% (86)
  2. 4 stars13% (19)
  3. 3 stars8% (11)
  4. 2 stars6% (9)
  5. 1 star14% (21)

Reviews summary

Pros
  • : Offers good value at this cost.
Cons
  • : Does not dispense in a smooth, consistent pattern.
  • : May not completely seal small leaks, requiring reapplication.
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Showing 1-3 of 53 reviews

Aug 25, 2025
anonymous
Item details
Multipack quantity: 1
Sold and shipped byProSolutionsDirect
5 out of 5 stars review

Verified Purchase

Good Product

Shake and spray, wait and if needed reapply, basically follow the directions, good for average leak.

Helpful?5C6CM303BDPV15334421691
Oct 7, 2025
WalmartCustomer
Item details
Multipack quantity: 1
5 out of 5 stars review

Verified Purchase

It was exactly what I needed and exactly how it was described on the website

Incentivized Review
Helpful?5C6CM303BDPV15334421691
Dec 30, 2025
WalmartCustomer
Item details
Multipack quantity: 1
5 out of 5 stars review

Verified Purchase

It was cheaper than brand name and worked as advertised

Incentivized Review
Helpful?5C6CM303BDPV15334421691