A friend of mine that use to do glass for a living,helped me put mine in and it only took about 2 hours,it would have gone faster but the guy I had cut the glass didn't do a very good job and it fought us a little.And for lube he used silicone spray,he says it works better and won't eat at the rubber.So it should be sealed with somthing else?I'll have to ask him about that.