Overall pick
Coghlan's

Coghlan's Seam Seal Repair Kit, For Waterproofing Tents, Tarps, Backpacks

Key item features

  • Effective Waterproofing: Prevents leaks by waterproofing sewn seams on nylon and synthetic outdoor fabrics, ensuring a watertight seal for various gear.
  • Versatile Application: Ideal for use on tents, tarps, rainwear, and packs, and works effectively on nylon, polyester, vinyl, canvas, and other outdoor fabrics.
  • Convenient Design: Features an easy-to-use applicator for straightforward application of the seam sealant.
  • Durable Finish: Dries to a colorless, flexible, and washable barrier that cures in just two hours after applying a thin film to the inside of seams.
  • Product Volume: Contains 2 fluid ounces (net volume) of the water-based seam sealant.
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Current price is $4.97
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Customer ratings & reviews

4 out of 5 stars
stars86 ratings49 reviews
How item rating is calculated
  1. 5 stars62% (53)
  2. 4 stars10% (9)
  3. 3 stars10% (9)
  4. 2 stars3% (3)
  5. 1 star14% (12)

Reviews summary

Pros

  • : Offers affordable options.

Neutral

  • : Can be fast and clear, but may be slow or streaky in wet conditions.
  • : Can be smooth with the brush tip, but also prone to drips.
  • : Can be effective at waterproofing, but may leak or vary in performance.

Cons

  • : Difficult to maneuver for precise application.
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Showing 1-3 of 49 reviews

Oct 5, 2023
ashley
5 out of 5 stars review

Verified Purchase

great product

i had a leak in my brand new tent. the seam on the bottom of the tent leaked a ton of water in when it rained in the mountains. this worked great and have not had any trouble with the leak since!

Incentivized Review
Helpful?4Y17V6NSLZT546859500
Aug 26, 2025
WalmartCustomer
5 out of 5 stars review

Verified Purchase

I can only assume it will be great. Havent used it yet

Incentivized Review
Helpful?4Y17V6NSLZT546859500
Feb 8, 2026
WalmartCustomer
5 out of 5 stars review

Verified Purchase

Used this to patch holes in an air tumble track. Worked perfectly and sealed every hole very easily.

Incentivized Review
Helpful?4Y17V6NSLZT546859500