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Mach 1 Tension Bands

Mach 1 Tension Bands

Availability: In stock

Pos-T-Vac Mach 1 Penis Rings are used with Vacuum Therapy Pumps to help treat male impotence caused by erectile dysfunction.
Item# Description Size Price

Size 5 - X-SMALL, Inside Diameter 0.30 Inch




Size 6 - SMALL, Inside Diameter 0.33 Inch




Size 7 - MEDIUM, Inside Diameter 0.44 Inch




Size 8 - LARGE, Inside Diameter 0.55 Inch





Mach 1 Tension Penis Rings is the top Tension Band brand manufactured by Pos-T-Vac. The Mach 1 Tension Bands displaces more tissue and provides better tension. Mach 1 Tension Rings constrict better than most Penis Rings to maintain a better erection. Mach 1 Penis Rings are used to treat Male Impotence resulting from Erectile Dysfunction. Made from thermal plastic elastomer, Mach 1 Rings have a round center with a flat surface allowing the ring to grip more of the penis than other standard penis rings.

Pos-T-Vac is an innovator in managing Erectile Dysfunction. The Post T Vac Rings allow men to maintain an erection for up to 30 minutes by placing the ring at the base of the penis. Pos-T-Vac products are made in the USA and the Pos-T-Vac Mach 1 Rings come with a 60-day manufacturer's warranty.

Erectile dysfunction and pre-mature ejaculation is something nearly one in five men experience sometime in their lives. Whether the result is from a medical condition or not, impotence and pre-mature ejaculation can be hard for any couple to handle. With Pos-T-Vac there is really no reason why you cannot enjoy a fulfilling sex life. It is also a safe alternative to drugs, surgery, injections and other methods available. Best of all, the Pos-T-Vac Ultimate Hex Rings are FDA approved.

The interior ring diameter is not necessarily the best indicator of the size that will best be suited for you. Each ring has a different stretch or give. Two men of the same exact size or girth, when fully erect, may actually need to use different sizes. The reason for this is that every individual needs a different level of pressure to effectively maintain an erection. Our suggestion is to try out a few sizes if you are unsure of which Pos-T-Vac Ultimate II Hex Ring size would work best for you. Another popular option is the Pos-T-Vac Ring Kit which includes various sizes and other accessories that are very useful when using a tension band.

Pos-T-Vac Mach 1 Penis Rings Features & Benefits

  • Round design with handle loops.
  • Made in the USA.
  • FDA Approved.
  • Constricts and grips better than most penis rings.
  • Pos-T-Vac Rings help erections last up to 30 minutes.
  • 60 day manufacturer's warranty.

Pos-T-Vac Mach 1 Penis Tension Rings Specifications

  • Size Options: X-Small 0.30 to X-Large 0.55.
  • Round design with handle loop on each side.
  • Construction: Silicone & Gel.
  • Latex Free.
  • HCPCS code: E1399.
  • Pos-T-Vac Mach 1 Penis Tension Rings Product Numbers: MACH5, MACH6, MACH7, MACH8.

How to Measure Yourself for Penis Rings

Determining the best size penis ring for your individual needs is largely by trail and error. The best size for most men is not just a matter of the size of the tension band opening. For most, the correct size has more to do with the amount of tension the band has and the amount of displacement or thickness of the band. (See the sizing chart below.) The more tension and displacement that the tension band provides, the more effective the tension band will be in maintaining an erection.

When you first purchase an ED pump kit, most kits have several tension band sizes already included to help you determine which size is the best fit. If you have forgotten which size is the best fit, or if you are switching from one brand to another, the Penis Ring Tension Band Sizing Calculator may be of help. Using the calculator is not guaranteed to find the exact size for your needs, but has been found by many as a useful tool to narrow down the possible choices. Tension bands are personal items and for health reasons are not returnable or refundable under any circumstances other than manufacturing defect.

How to use the Penis Ring Tension Band Sizing Calculator

Measure the circumference of the base of your penis next to your body with a cloth measuring tape. This measurement should not be taken on an erected penis. Enter the circumference measurement into the "Circumference" box below. Click on the grey button "Solve for Diameter". The diameter of your penis will be calculated and displayed in the blank box next to "Diameter" below. This provides the diameter with no tension.

Example: If your penis circumference is 1.25 inches (1-1/4 inches), enter the amount "1.5" in the box adjacent to "Circumference". Next, click on the grey button "Solve for Diameter". The diameter displayed in the solution window is 0.40. This number is between the Size 6 and Size 7 Mach 1 Penis Rings (0.33 Inch and 0.44 Inch). Recommend purchasing both the Size 6 and the Size 7 to determine which size provides the best fit and effectiveness. If both sizes are too small, then try the Size 8. If both sizes are too big, try the Size 5. This procedure has helped many to find the best size and level of tension that meets their individual needs.

Please note: Due to different tension amounts needed for each person This calculator is not designed to determine the size for first time users.
For a more effective sizing manner please see the Pos-T-Vac Tension Band Set.


Postvac Penis Ring Comparison & Sizing Chart

The chart below displays various tension band options with the ring size, amount of tension, ring diameter, and the amount of displacement or thickness. The smaller ring sizes have the most tension and the larger size rings have the least tension. The rings to the left of the chart have the least amount of displacement while the rings to the right have the most displacement. The amount of tension and the amount of displacement play important roles in the effectiveness and the level of comfort the penis ring provides the user. Some men will need to experiment with several different sizes, tension levels and amount of displacement to find the right tension band that fits their personal needs.

The amount of displacement affects the level of comfort, effectiveness, and the manufacturing costs of the ring. Therefore, the more displacement, the higher the cost of the tension ring and the more comfortable and effective the ring is likely to be. Men who are just beginning to experience problems in maintaining an erection may want to select a tension band from the left side of the chart, while men who have experienced years of erectile dysfunction may want to try a tension ring from the right side of the chart.

If a penis ring is found to be ineffective, you may want to select a smaller size penis ring that has more tension. If a penis ring is found to be uncomfortable but still effective, you may want to try a larger size or another ring from the right side of the chart that offers more displacement. Trail and error is the best way to find the penis ring that is right for you.

Tension Sizes Ultimate II
Round Rings
Ultimate II
Hex Rings
Ultimate II
Gel Rings
Mach 1
Tension Rings
Tension Low Displacement Medium Displacement High Displacement Highest Displacement
Highest X-Small Size X, 0.32 Inch N/A Size 0, 0.32 Inch Size 5, 0.30 Inch
High Small Size 1, 0.34 Inch Size 1, 0.35 Inch Size 1, 0.42 Inch Size 6, 0.33 Inch
Medium Medium Size 2, 0.44 Inch Size 2, 0.45 Inch Size 2, 0.47 Inch Size 7, 0.44 Inch
Low Large Size 3, 0.56 Inch Size 3, 0.55 Inch Size 3, 0.52 Inch Size 8, 0.55 Inch
Lowest X-Large Size 4, 0.65 Inch N/A N/A N/A
Economy - Best

For more information about selecting the right penis ring tension band, click on the following informative article: What Size Penis Tension Band Should I Get?

Tension rings are personal items and for health reasons may not be returned or refunded.

Additional Information

Additional Information

Manufacturer POS-T-VAC
Sub Brand N/A
Ships Free Yes

Top Rated Customer Reviews - See All Reviews

great product
These work great, better for me than the other rings offered. I cut off the wings, put a little lube on it and slide it on. Deep arteries bring blood to the penis and superficial veins drain it back out. A lot of men think their impotence is caused by the inability to get blood to the penis when their real problem is that their veins become leaky and can't hold it in. Constrictor rings are the simple answer (the cock rings they sell on the sex sites are for cosmetic purposes only). A constrictor ring doesn't stop blood from coming into the penis because the inflow arteries are deep, while it keeps the blood in because the outflow veins are superficial. It took me a couple of tries to find the right size, because you don't want to make it so tight that you do restrict the arterial flow. My ring size holds a strong erection (larger and stronger than it has been for many years) for 30 minutes or more. The penis turns dusky while the constrictor is on but the instructions state the recommended maximum wearing time.
Product Rating
Review by harrymacz / (Posted on 4/25/2013)
The rings work very well, but they fail after a few uses. I find them breaking at the seams.
Product Rating
Review by Billntx / (Posted on 12/9/2013)
The most effective of all tension rings sold by Vitality
I lost natural erections to cancer 10 years ago so very effective rings are essential to maintain a good erection for an extended period of time. I use a Rejoyn pump and the smallest size ring available. The 5/16 hex rings, 1/4 inch round rings and the 5/16 inch Mach 1 provide sufficient tension with the Mach 1 being most effective. I have had several of the hex rings fail at the corners so they are least satisfactory. The round rings (1/4inch) athough they are less costly are better. The Mach 1 are very effective but are somewhat more difficult to remove. All of the rings are far more effetive for my degree of erectal dysfunction than the larger looser rejoyn rings.
Product Rating
Review by chowlett / (Posted on 4/27/2013)
Great deal worked perfect lots of tension will recommend to you all.
Great deal made me feel a strong erection if you want to last longer for her sake take 1/2 of a Viagra and you will make her feel that willie she wants and she will want to do it again and again.
Product Rating
Review by Mickey / (Posted on 9/25/2013)
satisfactory results. A little difficult to remove
Product Rating
Review by none / (Posted on 6/28/2013)