GEAR AID Seam Grip WP Waterproof Sealant and Adhesive for Jackets, Tents, Sleeping Pads and Outdoor Fabric | Repairs Rips, Seals Seams on Nylon, Canvas and Vinyl

I had a few uses for this product so I purchased the big 8oz unit. I treated all the seams on my tent and my hiking boots with this product as well as some rain pants I use when riding my motorcycle.The good:It works very well. I squeeze a golf ball size blob of it into a small yogurt cup and use one of those small metal handle paint brushes to apply it to the material I want to seal. This works well as the seamgrip product dries slowly allowing me to work for an hour or more at a time.The not so good:Seamgrip dries very slowly, requiring that the tent (if you're sealing tent seams) must remain setup overnight, and preferably 24 hours or longer, to allow the product to fully cure. There is an accelerant (Cotol-240) which will speed this up greatly. However the Cotol-240 is not easy to work with and it is fairly expensive when you consider the small amount you get.The second issue with seamgrip is that it dries very shinny, so if you put it on your rain gear you'll see the seams from a mile away. Well, rain gear isn't supposed to be a fashion statement anyway. If you can get to the inside of clothing seams that would be the better place to apply the seamgrip and you won't have the fashion issue to deal with.Conclusion:Buy the big tube if you have lots of waterproofing to do or if you know you'll use it often, like at least once every month. The reason for this is that seamgrip will harden in the tube's opening, making it difficult or impossible to use a second time if you wait too long and allow too much of the product to harden in the tube. I've only used seamgrip recently so I can't vouch for its long term effectiveness, however, in the short term the product remains flexible and remains attached to material when folded up and opened up many times.

My 20 yr old camping tent was leaking and I removed all seam tape and applied this on the seams and after curing not a single drop of water came through. Be sure to wear gloves when using this as it is difficult to remove from hands. You can get it completely off once it’s cured.

Works amazing I usually use gorilla glue for the stitching on the insides of backpack as well as the water proofing material but usually it has flaked off after awhile, but this definitely works better as it forms a silicone layer instead of a plastic like material, used it on the flaked patches of water proofing material inside my backpack and it looks and works good as new. Only complaint the tube of sealant I was using did have a small puncture form after a few minutes of using “could’ve been my fault some how” wasn’t a big deal as I just left it there to dry and the sealant just sealed itself lol. Also it comes with one brush for the two pack and it’s basically impossible to clean as no amount of alcohol or water can easily take off the sealant to reuse the brush.

It takes about 3 tube's for a shortbed full size truck Softopper. Make sure you wear gloves cause this stuff is a nightmare to get off. To get it off, WD-40 works pretty good on your hands.

I had a couple older Gortex jackets that were in fine shape, but some of the seam tape started to come loose after washing and re-waterproofing. I used Seam Grip to re-attach the tape and wateproof the seams. The product is very tenacious and flexible when dried, and seems like it will stay on forever, it works great. At one point I contacted the company about using their accelerant to speed up the drying process and they were very quick to respond. They include a small brush to use for application, but you will definitely need more than one if you have multiple instances where you need to use the product. I bought a package of these -- https://www.amazon.com/gp/product/B07PHG2DQY/ref=ppx_yo_dt_b_asin_title_o01_s00?ie=UTF8&psc=1 -- on Amazon as I had several places to repair. I also used it to re-attach some ankle protection patches on a pair of ski pants, and again it worked perfectly. It's a bit messy to work with - think silicon adhesive - but all has held so far.

I have had the same Arc'teryx shell for about 18 years now, past the time of warrantee, and the sellers offered to replace it at a discount the last time that I sent it to re-seal around the pockets. I decided to let it ride. Recently, and I think for the first time ever, I ran it through a washing machine, and followed the instructions. Well, easily a third of the seam tapes peeled right off (some had been replaced in the past by the manufacturer, and I had replaced one using iron-on tape). I used up a whole tube, gluing the original tapes back in place while also sealing the seams. I had to scrape off some residual seam sealer in places. It took a week+ of on-again, off-again work, but I got everything glued back. It did need a week past that for me not to feel any tackiness anywhere, and you will need a lot of clothes pins and/or those black metal paper clamps. With all the curvature, I could only do a small area at a time, then let it dry for 12 hours before removing the clamps, and lots of gluing of small missed areas was needed. (An ironing board for a work space helped, and I could clamp the fabric taut.) I am going to let it cure a good long time before wearing it. I live in a non-arid area, if that had an effect (some folks noted that it cures better under humidity). It took the whole tube; do not roll it up like toothpaste, as it will break at the corners, and it gums up rapidly. I did not try putting it into the freezer, thinking that I would not need to over the course of a week, but I should have tried it. Nearing the end, I would just poke a wire into the tube to get a little more glue to fix just one more spot. So, $8 saved me buying a new coat, or ironing new tape over all of those seems, which also would have cost more and with my skill level come out worse. There were also areas that seam tape would not have fixed, like sleeves for drawstrings, the collar plate, and some pocket areas.

I used this to seal the seams on my boots, it dries quickly and makes a industrial level seal where every it is applied!