5 oz. water soluble sealant for all vacuum erection systems. Lubricant is used with VED systems to create an effective seal and assist with the application and removal of tension rings. ***OOOPS ….. we ran out of our Osbon Personal Lubricant 🙁 No worries!! The Aquagel is the lubricant of choice for Pos-T-Vac Medical and customers have been very satisfied with it’s performance. Call us at 800.438.8592 option 3 if you have questions.