How to Use a Penis Pump: What It Does and How to Use It Safely

The vacuum pulls blood into the erectile tissue, which produces an erection or a temporarily larger, fuller penis. The effect lasts while the blood stays in: for sex, some people slide a constriction ring from the base of the cylinder onto the penis to keep the erection. Pumps do not cause permanent enlargement. If you are dealing with erectile dysfunction, a doctor can recommend a medical vacuum device and explain how to use it alongside other options.

• Cylinder size: pick a length and inner diameter a little larger than your erect penis so there is room to expand.
• Pump type: hand bulbs and trigger pumps give control; automatic pumps are hands-free; water-based (hydro) pumps use warm water for a gentler, more even vacuum, often in the shower or bath.
• Safety features: a pressure gauge and a quick-release valve are worth having.
• Seal: a soft sleeve or donut at the opening makes the seal more comfortable.

Compare cylinder sizes and pump types in penis pumps.

• Trim pubic hair near the base if it stops the cylinder from sealing.
• Apply water-based lube around the base of the penis and the rim of the cylinder.
• Place the cylinder over the penis and press it gently against the body to make a seal.
• Pump slowly and gradually. You should feel pulling and fullness, not pain.
• Keep the session short: follow the maker's limits, typically no more than 10 to 20 minutes, with breaks.
• Release the pressure with the valve before removing the cylinder.

• Stop and release the pressure right away if you feel pain or numbness.
• Small red dots (petechiae) or bruising mean the pressure was too high; ease off and give it time to heal.
• If you use a constriction ring after pumping, remove it within 30 minutes.
• People with blood disorders, sickle cell disease or on blood thinners should talk to a doctor before using a pump.