I used this to seal the seams around the zippers I put in on a pair of rain pants. It comes with a tiny brush. I trimmed the bristles some to make them stiffer. It is not a neat and clean application but if you are careful it does get the job done. It would be better if it came with an applicator tip with a hole but it doesnt so the brush is the next best thing. Do it in a ventilated area!
Don’t be afraid of seam sealing! It is really not bad. This product is easy to use and dries quickly. Just make sure to use the brush and work it into the seams and threads really well. Once you’re done, you’ll say “that was it?”
I used this sealant on seams for dry sacks I made. It is extremely sticky/messy - I newspapered my table and used rubber gloves, also ended up throwing away the brush after. It seals seems well though I found it took closer to 24-36 hours to fully cure, rather than the 12 hours indicated on the package. Also anywhere it touched my fabric it is now stuck, can't exactly "clean it off". You've either gotta be extremely diligent in your application/how you set the item down or not care about aethetics.
I received my order much faster than expectation, thank you!