When I first started using the Osbon Erecaid system, I found that to maintain a firm erection meant that the tension ring was so tight that the pain it caused negated any pleasure I may have had from...
I always have used liquid soap as a lubricant while pumping with my Osbon Erecaid. If you are careful, you shouldn't allow the soap to come into contact with the pump. I use the soap as a lubricant...