Ultraseal shelf life?

[Rugged Path]

I have found a bottle of this product which must be over 5 years old but, unopened. There is no expiry date on the bottle so, would it still be suitable to use?

I have a slow puncture in my tubeless tyre and cannot find the source of the leak while the wheel is on the bike nor does the rubber valve insert pass albeit it does pass air when bending valve to get the air chuck on to fill with air.

 

[dave hendy]

I have just used a bottle of ultraseal I had before I got my k1300 with tpms in 2009. As all my BMW's have had tpms since then it has being sitting there but I have just used it in my Honda as it had a puncture and I has to get a new tyre. It seemed fine when I put it in and the bike is ok to ride so I presume it will work ok if needed!