McNett Seamgrip Seam Sealant

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.

I used this to repair corner of fishtank and it did a brilliant job. Easy to apply and cures fast. Great sealability and no leaks.

Not the easiest to apply, but what is? It seems to be doing a good job on the waterproofing though. so thumbs up. Used on an old tent, in combination with some seam tape and I'm pleased with the result.

Can be a tad messy to apply and I could have done with the longer brush that's pictured. Mine didn't come with that. I ended up removing the nozzle brush and using that as a small 'paintbrush' to apply it. This worked well. I ended up leaving mine to dry overnight as it was still tacky several hours later but it was worth it and it dried to a really good 'rubbery' type finish which I've no doubt is watertight. Can't comment on exactly how waterproof it yet as I haven't been out in the tent yet but when I do, I'll try and update/add to this review. So far though, a great product and I'll be carrying the spare tube with me in the mountains for on the spot repairs of clothes and rucksacks. Great stuff.

The best and only seam sealant I will use. Second to none. Absolutely the right stuff to use to seal the inside outer of a tent. I've also used it successfully to repair my thermarest and to waterproof stitched repairs on outdoor kit.

I had a really bad time with this stuff, I tryed to repair some lifting on the taped seams on the ground sheet of a tent (Ortik). I followed the instructions, preped the tent and applyed a little under the lifted edge of the tape, which immediately puckered and wrinkled, making it very hard to stick down, the glue also began to unstuck the existing glue, spreading along the seam. Pressing the tape down, in an attempt to smooth it out and get it to stick only pushed thenew glue against the old, dissolving it and wrinkling the tape. I now have a section of unstuck seam tape, and a sticky tent. For me, the only way this could work is if you could maintain perfect even tension along the seam, after you apply the glue, so the tape was held flat. I realise that they expect you to pitch the tent so the the seams are pulled tight, great in theory, however in practice, well put your tent up and see how flat and even the seams sit.

More than enough for most repairs. In particular where the glue on seams has failed over time.1. Compared to the cost of replacing a jacket for example, its very cheap.2. Comes with a small brush to apply.3. Don't do it all in one go, apply bit by bit. It takes longer, but when you have a 3 dimensional shape, go slowly4. Think about applying to the tape, or to the jacket. In some cases the tape is easier5. You might need to weigh it down to keep things flat. Use a flat bottom glass, remove after it has tacked up6. Make a plan up front how you are going to glue. Centre outwards in my view is better. Which layers first7. You can probably see the old glue as a guide as to where you need to apply it.8. It's probably illegal to sniff the glue! :-)

I bought 2 tubes to reseal and MSR Elixir 3, which had deteriorated flaking seam tape. I applied (purposely) to the outside of the tent, which may not be as aesthetically pleasing but beats spending hours trying to remove all the old seam tape. Annoyingly one tube was about a third cured before even breaking the seal, so only had about 2/3 usable sealant. I applied with a small syringe and a brush rather than the enclosed brush/ cap thingy, as from previous experience they make too much of a mess. The glue seemed thicker than when I have used it before and became quite tacky quickly on a 25c day making it a little difficult to get on. Second tube was better but still a little thick in consistancy. Apparently you can thin this a bit with acetone, but I didn't bother. Check out Dose Of Dirt on YouTube for Your Tent Is Not Waterproof and TheOutdoorGearReview for his seam sealing tips.And as per GearAids advice allow to dry fully then coat in talc to stop it sticking to itself when packed away. Oh and you're supposed to apply to the inside of the tent