Best Tension Rings for a Vacuum Therapy Penis Pump

A tension ring, otherwise known as a tension band, penis ring, or a cock ring, is a critical component of the vacuum therapy system or vacuum erection device (i.e. a penis pump). The ring is first loaded onto the base of the pump, and then is slipped onto the base of the penis to help maintain an erection during intercourse after the pump is removed. Tension rings can safely be worn for 30 minutes and should always be used with a water-based lubricant.

Customers often ask which tension ring is best, and the answer is that it depends. Everyone has different preferences which might be influenced by ease of use, comfort, fit, durability, and other factors.

In addition to personal preference, it's also important to consider factors which may impact health and safety, such as the materials used, to ensure the ring is not made of a material which the wearer is allergic to, such as latex.

Additionally, consulting with a healthcare professional can help in choosing the most suitable tension ring for your specific situation.

What's important is to experiment with a few different options and find the one that works best for you. Below are some of our best selling tension rings.

Pos-T-Vac Mach Ring

The Pos-T-Vac Mach Ring is our top seller and is considered by many to be the highest quality tension ring for vacuum therapy on the market.

It's around 30% thicker than standard tension rings for maximum comfort and pressure. The thick center helps disperse tension evenly around the penis. It comes in a range of sizes, from 6.5mm to 21mm, to meet your needs depending on penis size and the pressure required to maintain an erection. It's best to experiment with different sizes and find the best one through trial and error.

The Mach Ring is also one of the most durable tension rings on the market, with an estimated life of 30 to 40 uses before it starts losing its elasticity. 

Handle loops make it easy to handle and stretch, especially when your hands are covered in water-based lubricant.

The Pos-T-Vac Mach Ring is made in the USA and is latex-free.

Pos-T-Vac Ultimate Ring

The Pos-T-Vac Ultimate Ring is another of our top sellers. The Ultimate Ring is similar to the Mach Tension Ring except it is notably softer for increased comfort. While the Mach Ring is great for providing pressure to keep the penis erect, the Ultimate Ring is softer and may be more suitable for those who find the Mach Ring to be uncomfortable.

The sizes of the Ultimate Ring differ from the sizes of the Mach Ring, so the size that worked well for one may not work for the other. As always, it's important to experiment with different sizes and find the one that works best for you.

Because it is softer, the Pos-T-Vac Ultimate Ring is slightly less durable than the Mach Ring, and should be good for 20 to 30 uses before it starts losing its elasticity.

The Pos-T-Vac Ultimate Ring is made in the USA and is latex-free.

Ring Kit

If you're just starting out with tension rings or a vacuum therapy penis pump system, the amount of supplies and knowledge required can be daunting. To ease into the process it may be best to start with a ring kit to ensure you have everything you need as well as instructions for beginners.

The ring kit includes two Pos-T-Vac Ultimate Rings, sizes 1 and 2, so you can experiment with different fits before committing to any one size. The kit also includes a loading sleeve and cone, as well as a sample of water-based lubricant and instructions for use with your pump system. The ring kit is a good first step to using penis pump tension rings and discovering which size and type work best for you. 


In summary, there is no best tension ring for a vacuum therapy system. Each user has unique preferences depending on their anatomy, comfort level, and other preferences, not to mention the preferences of their romantic partners. The only right answer is to experiment with different types and sizes to determine what works best for you.

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