Opening and closing slides in winter

My rig is a 2017 Jayco Class C and my slides have rubber seals. I extend the slides periodically in winter and 20 deg or even less if we're out with no problem. However I keep them lubed with "rubber seal spray" or if I don't have any I spray Armorall on them to keep flexible. Been doing that form many years on several years with no problem. The key is the seal must remain flexible. The summer heat and sun takes a toll on the seal if not protected by some kind of shield compound.