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Seam Sealers

Top Picks

How we choose: The best seam sealers highlighted here were selected based on 13 reviews of 7 products. Our top picks are those that are readily-available in the United States and have received the highest overall ratings from reviewers.

How we test: Trailspace is powered entirely by our community of readers. The reviews posted here reflect the real-world experiences of outdoor enthusiasts just like you.

If you've used a seam sealer that you think should be listed here, please share your experience.

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Gear Aid Seam Grip+SIL

user rating: 4.5 of 5 (2 reviews)

Specially formulated to be easily applied to silicone-coated nylon and poly fabrics to seal tarps, backpacks, tent floors, liquid silicone has many other uses for outdoor enthusiasts. I took some pictures while doing it, so I decided to turn this test into a mini-tutorial for seam-sealing a tarp.

Reasons to Buy

  • Easy to apply
  • Has many uses
  • Clear
  • Dries relatively fast
  • Comes ready with a brush
  • Inexpensive

Reasons to Avoid

  • Leaves a sticky film, but every similar sealing solutions does too.
  • Not really a con, it’s a simple product that just plain works.

The tube came with the Hummingbird Pelican (shown in the images of this review) to be applied to the tarp‘s ridgeline seam. It comes unsealed from the manufacturer, which is not an uncommon practice among specialist makers. Dutch and others also sells some of their stuff with seam sealing as an extra, or optional.   Prior to trying Seam Grip Sil, I‘d seal my gear with a mix of silicone and some spirit, to turn it finer so as to be brushed onto the fabric. Recently, I had to do just that to one of my backyard camping tarps that started showing tiny pinholes on the ridgeline seams.  I’ve used other Gear Aid products before, such as the Tenacious Tape and some of their gear cleaners, and have always been satisfied with the performance...

Read more: Gear Aid Seam Grip+SIL reviews (2)

Gear Aid Seam Grip+WP

user rating: 3.5 of 5 (5 reviews)

The only thing I will use on cuts, tears, and seams.

Reasons to Buy

  • Excellent bonding
  • Superior strength
  • Flexibility

Reasons to Avoid

  • Cure time
  • Sticks to self

I've used Seam Grip on everything from tents, to rain shells, to hiking shoes, to even fishing waders. Depending on the location and size of tear, I may back it with Tenacious Tape, then smear on Seam Grip, such as on the sleeve of my rain shell.  On my tent seams, I actually had to re-stitch, then seal it. My largest job was when the vinyl window on the rain fly of my REI tent simply let loose — literally coming off. It took a few evenings and creative taping/stretching/gluing sessions to get it back in place, but it has held through near hurricane force wind and rain on two occasions.

Read more: Gear Aid Seam Grip+WP reviews (5)

Gear Aid Tent Sure Tent Floor Sealant

user rating: 4.5 of 5 (1 review)

Tested in the Colorado backcountry in "not-so-pleasant" weather.

Reasons to Buy

  • Reseals tent floor
  • Doesn't peel up after application
  • Lengthens life of tent floor

Reasons to Avoid

  • Foam applicator could be a bit bigger

This is a great product that does what it claims.  I would recommend application before each season.  Backpacking gear and clothing is expensive and I'm sure no one wants to get it wet, especially inside your tent. I applied the floor sealant to my Mountain Hardware Light Wedge 3 at the beginning of the season.  Application of the product was easy, it didn't smell too bad, and it dried quickly. I would definitely make sure the floor of your tent is clean before applying the floor sealant.

Read more: Gear Aid Tent Sure Tent Floor Sealant review (1)

More Reviews of Seam Sealers

Trailspace reviewers have shared 13 reviews of 7 different seam sealers.

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Other Types of Gear Care and Maintenance

Find more gear care and maintenance reviewed in these related categories:

Repair Kits

Patches and Tapes

Down Cleaners/Treatments

+4 more types

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