Related topics for further reading
A vacuum erection device, also called a "penis pump," can help you get and keep an erection. It's a good option if you can't or don't want to take medication for erectile dysfunction. In fact, it works for up to 90% of men.
A vacuum erection device usually has three parts: a plastic tube (called a cylinder) that fits over your penis, a stretchy band (often called a “cock ring”) that helps keep the erection, and a pump, either manual or electric, that helps create the erection.
Each vacuum erection device is a little different, but they work by removing the air from the cylinder, which creates a vacuum. This vacuum helps draw blood into your penis and causes an erection. It can take up to 10 minutes to get an erection. Once you do, you remove the cylinder and place the constriction band at the base of your penis to keep the erection.
It’s very important not to leave the ring on for more than 30 minutes.
Vacuum erection devices are not recommended if you take blood thinners or have a bleeding disorder.
This chapter contains general information about erectile dysfunction. It is not a substitute for professional medical advice or treatment. Always consult your doctor or healthcare provider for guidance on your individual medical situation.
Last updated: May 2025