You can buy lubricant for the neck,hand, and leg seals. Spray once or twice a year to keep rubber soft. When storing for the season put in some container that is a bit more air tight to keep the rubber from drying out.
You want to treat the seals with a silicone spray when storing for the summer and winter. It will keep the seals from cracking. Here is a link to the one I use. It works great. http://www.amazon.com/Silicone-Spray.../dp/B001O78GY0
Don't spray it in the house because the mist will get on your floor and it will be like a ice skating rink.