I am installing some thermopane style glass to replace 25 year-old thermopane glass that had lost itsr seals and become cloudy. The glass company where I had the windows fabricated gave me a caulking size tube of Industrial/Construction RTV Silicone - "professional Quality" manfactured by c.r.laurence to use when mounting the glass in the window frames. I'm trying to figure out how this silicone rubber differs from the "standard" silicone rubber sold at hardware and big box stores.
Helpful comments appreciated.