I have been experimenting with Slip Stic, and it works very well.. It does not take the place of a shaft sealer but it will take the place of items like cue silk and products like it. It's easy to use and does not harm or pit the shaft, so whether you put it on by hand or machine it produces excellent results. Please visit the site.
http://www.slipstic.com/
http://www.slipstic.com/