Gear Aid Seam Grip + Sil (SilNet) tube
Gear Aid Seam Grip + Sil (SilNet) tube in packaging
Gear Aid Seam Grip + Sil (SilNet) being applied to a tent

Seam Grip + Sil (SilNet)

4 reviews
Regular price$7.50

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Seam Grip + Sil Silicone Seam Sealer is specially is specially formulated to be used with our silicone impregnated fabrics. When applied, Seam Grip + Sil will provide your tent with a long lasting watertight seal that is unaffected by temperature extremes.

Warning: This product should only be used on Silicone Nylon and Silicone Polyester shelters. 


No one wants to sleep in a puddle. But if you own a silnylon tent, you could end up in one—if you don’t treat the seams first. That’s because ultralight silnylon tents aren’t typically sealed at the factory. Luckily, there’s Gear Aid’s Seam Grip + Sil™ silicone seam sealer. It’s fast and easy to use. The silicone adhesive in Seam Grip + Sil waterproofs silicone tent seams with just one application. Seam Grip + Sil exclusive formula is not affected by extreme heat or cold.


  • Silicone seam sealer
  • For use on silicone treated products (Silnylon, Silpoly)
  • Unaffected by extreme heat or cold
  • Ideal for ultralight tents, tarps, packs and garments
  • 1-1/2 oz. tube seals critical seams on most ultralight two person tents
  • Made in USA
Customer Reviews
3.8 Based on 4 Reviews
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Filter Reviews:
Mike S.
United States United States
Seam sealer

Excellent product!

Dennis M.
United States United States
Easy to do

The seam seal had me a bit worried. It was actually very easy, just take your time. I also mixed a very small amount of odorless mineral spirits in it.

Scott B.
Philadelphia, PA
Great product, could have better instructions.

This sealer is great. Although it was my first time sealing an entire tent I was able to do it in less than 2 hours. Its not as messy and expected but the applicator (brush) is not the best. I wish there were instructions that helped explain how much sealant I needed on the seams.

Bob P.
United States United States
It's thick and very difficult to work with.

Bought it to seam seal my lunar solo, but instead got it mostly every but the seams. Just pay for the seam sealing service - it's not worth saving $15 ($30 service - $7.5 sealant - $7.5 mineral spirits) to DIY it. What's worse is you cannot return the tent if you even get a drop of this stuff on the tent.

Six Moon Designs

This is not a product that we make however we have similar feelings, the product is quite thick but not unmanageable. If you want to thin it down we recommend using Mineral Spirits then thinning it down to a thick oil consistency, too thin and it will just leak into the seams instead of coating them.