I use o-ring lubricant, I can't remember the brand atm, but it's specifically formulated to "condition" rubber type products as well as lubricate.
When o-rings and seals are conditioned, they will not only stop shrinking, but actually grow slightly preventing cracks and tears.
Most auto parts stores or industrial shops like Granger will carry it. You can get it in large quantities cheap.
When o-rings and seals are conditioned, they will not only stop shrinking, but actually grow slightly preventing cracks and tears.
Most auto parts stores or industrial shops like Granger will carry it. You can get it in large quantities cheap.