E30+ propeller shaft and stern tube diameter

I am about to order a Manecraft Shaft Seal (http://www.tnorrismarine.co.uk/manecraft.php) in an attempt to get a dry bilge on my Ericson 30+. To order the right dimension I need to know the diameter of the prop shaft and the OD of the stern tube. Unfortunately I don't know these measures and my boat is docked 40 miles away. In an attempt to avoid the 80 mile roundtrip to take measurements I was hoping that someone on this forum would know the dimensions, or point me to some documentation.
Thanks.