Smooth-On Sil-poxy Rubber Silicone Adhesive - 0.5 oz Tube

I bought this product expecting it to bond rubber as the description claims, but it doesn’t work at all. I tried it on several rubber surfaces, and there was no adhesion whatsoever. Very disappointing and misleading — it’s not suitable for rubber, despite what the listing says.

فاشل

This glue works perfectly for bonding the silicone holder of a Cochlear sound processor. It provides a strong, reliable hold while keeping the silicone flexible enough for daily use. Highly recommended if you need a durable solution for silicone repairs! Several weeks have passed, and the glued part is holding firmly.

Been an amputee for a couple decades. My silicone liners are quite expensive, and tend to develop holes from everyday wear. I've tried melting the silicone, crazy glue, rubber cement... with disastrous results LOL. The Sil-Poxy worked wonderfully, bonded to the existing silicone, and is flexible.

I had couple of holes in my Silicon Neck Seal on my Drysuit, nothing would work to patch the holes until I came across this Adhesive. It is expensive for 0.5/oz but I ended up using only few drops to repair the hole and it saved me $130 on a new Neck Seal. The Adhesive will glue Rubber to Silicon which is what I did to patch up the small hole, it cures pretty fast like about 12 - 15 min, however to be safe I left it cure 24 hours before I put it to test. You can get a larger tube of 2oz from another supplier but unless you have clear need for large amount, I think the 0.5oz is good enough and not wait for it to dry out. I am storing this in my Freezer with my other adhesive and thawing it out in warm water if I need to use it again.

I tested this using 2 different types of flexible o-rings. One was black and the other clear. While the black is flexible, the clear one has more flexibility to it. This Sil-poxy worked very well on the black one. After fully curing I put a good bit of stress pulling and flexing that ring. (This manufacturer's website by the way says to fully cure/dry 24 hours rather than the 12 minutes the tube says.) The clear ring, however, did not hold at all. It seemed a little sticky before fully curing so I had high hopes, but after fully drying it simply fell right apart and the cured sil-poxy slid right off it. I tried this a few times, even trying to first clean/abrase the clear one with alcohol, then tried heat, and even tried treating it first with sliicone lubricant known to "melt" these. Nothing worked -- this sil-poxy just slips right off the clear one. So bottom line, it works well for some but not all types of silicone.