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

It smelled like rubber cement, and I thought I had massively overpaid for a tube of rubber cement. But turns out its not that, its a different formulation. I had a textile motorcycle jacket with a couple rips in the side, took some 1000 denier nylon sheet, made some custom shaped patches, and slathered this stuff all over the jacket and patch, and let it cure overnight. Does it look like it was patched? Yes, yes it does. I don't care. Its held up well to wearing and high winds from riding fast. Very glad I tried this. Two thumbs up.

I recently had to deal with some bad seams on a tent I bought, and this sealant came to the rescue. What I really liked about this product was how easy it was to apply. It went on smoothly, and the drying time was impressively quick. Within a short period, the seams were sealed, and the tent was ready for use again. One thing to keep in mind, though, is that while the application process is simple, you need to be careful to avoid any mess, as it can get quite sticky. Additionally, depending on the size of your project, you might need more than one tube to cover all the problematic areas. Despite these minor issues, I’m pretty sure this sealant will outlast the tent itself. The seams feel much sturdier now, and I have no worries about them giving out in the middle of a camping trip. If you’re facing similar issues with your outdoor gear, this product is a reliable and efficient answer.

It's somewhat hard to know what the difference between all the Gear Aid/McNett sealing products really is. This material is extremely heavy duty and effective, but somewhat tricky to apply neatly. It has the consistency (and smell) of model glue or a thick general-purpose adhesive, but it really flows out nicely and grips seams and fabric well. The end result is a flexible, tough, glossy, somewhat thick, somewhat tacky, 100% waterproof seam. My advice for applying it would be to forget the brush-cap thing and go out and buy a few more bristle brushes. They don't have to be 'acid brushes' like the one supplied, but they should be somewhat soft and no wider than 3/8" – cheap artist brushes should work fine. You want several and you want them cheap because they will be ruined after using them with this stuff. When applying, I would squeeze out less than you think you need. Although it's thick, it can be brushed a fair amount and it will still flow out nicely. I found that if I brushed it out as thinly as I could while still getting a complete coating, the final result was good. If you put too much down, the end result is too bulky and thick, which can be a problem if you're folding it, etc. So keep it thin! You can always squeeze a small amount on your brush and add to what you've put down, but you won't be able subtract from what you've put down very easily. So this is very effective stuff, but it's not very pretty. And it's tacky after it has dried – I ended up applying seam tape over it to help take away the tackiness... it was more effort and cost, but the results are truly bombproof, durable and look reasonably good.

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.

Worked great to repair a tent window and some seams that came apart in high winds. Also used it to glue some decals back on a sweatshirt. Smells bad and probably causes cancer so use outdoors.

Amazing stuff. Works as a thick sealer and also as a cement.

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.

Would it kill you to include a piercing cap? You know, the kind with a little point that is recessed in the top that the user can pierce the tube seal with. Product does seem to work. Will report back on longevity.

Ha svolto adeguatamente il suo dovere sigillando le cuciture di una tenda da tetto. Ora dall'interno non ci sono più infiltrazioni date dai fili

Worked excellent for a tiny tearnin a downfilled jacket

Muy buena calidad y duradero

Excellent product for seam sealing and patching. I primarily bought this to apply a patch to a significant patch for my nylon tent and after 24 hours it made a good solid bond which dried perfectly clear whle remaining flexible. I had some stitching to support the tear and used this to seal the stitching afterwards. I personally tried thinning it with white spirit to pentrate the stitching better but still found it very thick though it worked well. I found it a bit sticky for seam sealing though it was very effective. Bonding and grip was excellent. Tubes just a bit small for a major repair (hopefully a rare event for any camper) and quite expensive - I would have liked to be able to but a larger tube size despite cost. Primary lesson is not to rip my tent so badly next time! Excellent for restoring the seams in a worn out old tent.

Bought this to seal the seams on my awning tarp when camping. Easy to apply and cured nicely overnight. Should stop the leaks.