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VS Extreme™
Polyurethane Vacuum Bag
4' x 9'
* Special Savings! *



Regular Price:
Your Price:
$366.00   ($110.00 Savings!)
Customer Rating:
Stem Insert Type:


Product Description

VS Extreme™ is the ultimate vacuum bag. Each bag is made from an extra-thick (30 mil) polyurethane material that has been designed for using an advanced thermoplastic capable of withstanding pressures exceeding 3,750+ psi and stretching more than 6 times its width and length*. VS Extreme vacuum bags offer superior resilience and unmatched puncture resistance. Made in the USA.

Each bag is welded with a state-of-the-art custom RF welding machine operating at 7,000 watts and 50 lb/in of pressure. This exact combination of frequency and clamp strength yields the most durable and airtight seam available. Each bag then undergoes a series of inspections including a final check that I do prior to shipment.

*Elongation and breaking strength based on ASTMD 412 test method.

Click here to determine which brass stem option (above) you should select when ordering this bag.


  • Flush-Mount Valve StemFlush-Mount Bag Stem - The VS Extreme vacuum bag also includes our flush-mount bag stem assembly that allows you to use the full length of the vacuum bag without worry of project surface damage. A specially designed 2.5" diameter 50 mil flange is molded onto the polyurethane stem body and is permanently welded onto each bag. This creates an 80 mil total thickness reinforcement area for maximum durability. A lock-on connector is required to attach your vacuum tube to the bag stem.
  • Lubricant Infusion - VS Extreme vacuum bags are infused with a non-transferring lubricant that works in several ways to make vacuum bagging easy and trouble-free. This lubricant prevents most woodworking adhesives from sticking to the bag. Glue that sets on the bag simply peels right off. Unlike traditional urethane material, infused polyurethane allows the user to easily slide the platens and project panel into the bag without "blocking" or binding. The slippery surface makes inserting project panels a breeze.
  • Superior Resilience - Months of extensive testing resulted in a custom formulation that is unsurpassed in durability. VS Extreme bagging material typically withstands 650% more use than standard 30 mil vinyl.

Vacuum Pump Inside a Vacuum BagAdditional Information

  • Actual Size: 54" x 114"
  • Approximate Project Size: 48" x 108"
  • Thickness: 30 Mil
  • Color: Clear
  • Softening Point: 150° F
  • Melting Point: 320° F

Each Bag Includes

  • Attached Flush-Mount Bag Stem
  • 58" Bag Closure
  • Detailed Care and Instruction Sheet

Please Note

  • Bag Closure IncludedThe opening on this bag is on the 54" side.
  • Click here to download the PDF instructions.
  • A lock-on connector, which is included with all of our vacuum press kits, is required to connect a vacuum line to this bag.
  • This bag is sealed on three sides. Some users prefer to have two opposing open ends so that a shop helper can assist with loading larger projects from the other end of the bag. To do this, purchase an additional bag closure and simply trim off the end seal.
  • The vacuum stem is mounted in the center (left to right) and approximately 15" inward from the bag opening.

Learn more about this product by clicking here.

How do I attach my vacuum tube to this bag?
Our lock-on connector is required to connect a vacuum tube to this vacuum bag. This connector is included with all of our vacuum press systems.

What else should I know about the bag?
The maximum project size that is listed for this bag is approximate. It will vary because of tolerances in the manufacturing process. The maximum project size will also vary depending on the total thickness of the platens and project. You can maximize the usable size of the bag by using breather mesh instead of a top platen.

Does the vacuum bag have to stay connected to the vacuum press after full vacuum is achieved?
Yes because a perfect seal on a vacuum bag is virtually impossible. Here are some things to consider.

  • Sometimes the bag closure doesn't seat perfectly across the opening.
  • Sometimes the bag stretches a bit after full vacuum is created and then needs a bit of additional vacuum. This happens most often when there is a large project in the bag. You'll hear the vacuum system cycle off (if you have any auto-cycling system) and then turn on again for a few seconds. After that, it may not cycle again for several minutes or even hours.
  • After many uses some bags develop pin holes which can be almost invisible. In those cases, it's best to let the vacuum press keep the bag vacuum under control.

If the vacuum system is disconnected from the bag, you won't know if there is a leak because there is no vacuum gauge on the bag itself. If the bag is connected to a vacuum press system, you can easily see the vacuum level by looking at the gauge on the vacuum press. The vacuum inside the system is the same amount of vacuum inside the bag. If your vacuum press cycles on and off too frequently during a project pressing, you'll know there is a leak and if you can fix it. However, if you can't fix the leak, at least the vacuum system will keep manage the vacuum in the bag until the panel is finished.

Does epoxy stick to this polyurethane material?
I have tested the polyurethane with several brands of epoxy purchased from the local hardware store. The epoxy did release from the test samples. However, I've have received differing opinions about this from our customers and my guess is that it depends on the type of epoxy, how much epoxy comes in contact with the material, and how often the vacuum bag is used in this capacity.

Do you offer samples of this polyurethane material?
Yes. Please click here for details.

Product Reviews

  1. High Quality Bags - Heavy Duty Keeps Fuss to a Minimum

    Review by Marc Baril

    I bought this bag to veneer full size doors in one go. As it turns out, I didn't use it like that - but I can run the individual pieces for 4 doors in one go by using the 4' wide bag. It was well worth the cost to save on time when building many doors.

    I would highly recommend the thicker bags for anyone who can swing the cost. It just makes life so much easier not having to worry about the edges of boards damaging the bags. I own a 2' wide VS Extreme bag that I've had for about 9 years and it is still in great condition.

  2. A Must for Professionals

    Review by Helmut Furtner

    I got this bag to replace an abused 20 mil bag after 3 years of use. The protection against glue overflow on the inside of the bag is not as good as it sounds. Always use a plastic sheet over your projects. Sharp corners should also be softened with a rag or sorts. Also avoid voids in molds that can suck in the bag, it will pop. So protected you will have it for many years.
    Other than that it is very durable and stretches nicely over tall objects.
    I use it to laminate multiple layers of 1/8" solid wood for curved parts and veneer lay up in marine cabinets and woodwork.

    [Note from Joe: Most veneering glues will release from the vacuum bag very easily. However, epoxies and other post-catalyzed adhesives will stick to the bag after a few years of use.]

  3. So impressed...

    Review by Bob Fynbo

    Product was a great price, company very communicative, shipped promptly and arrived on time. Product was high quality. So impressed with company that when I came back to write the review I ordered some veneer too!

  4. Review from Denver, CO

    Review by Tom Faber

    I ordered the Excel 5 vacuum press and a VS Extreme Polyurethane vacuum bag from Joe and I must say that I am completely impressed. Not only was the system easy to put together but also easy to use. My projects have been turning out better than I had expected with this system and for that I am grateful. Also, Joe clearly made himself available for any questions that I might have using the system and answered those questions very quickly. It has been an amazing experience going through this company and I could not be happier. I will definitely use for all my vacuum system needs in the future.

  5. "Extremely" Nice

    Review by Nick Gilman

    I want to write a review but I'm not sure what to say. This bag is incredible in every. Joe replied to everyone of my crazy emails about this and suggested it (without being even remotely pushy) for my type of use. He was dead on... for making longboards this bag is excellent. Shipping from Maryland to Michigan took only 3 days and was very affordable. Everything on this bag just screams "high-end". You will not bne disappointed!

  6. When only the best will do, this is it.

    Review by Jerry H. Buchanan

    I'm very please with this bag I bought here. The material is sort of like silicone... very flexible. I've been using the bag for a couple of weeks and it seals up perfectly without any hassle. The valve stem works well also.

  7. Got What I Wished For

    Review by Jackson N.

    My woodworking business runs about 4 to 6 veneer boards each day. That is a lot of vacuum pressing and because of this, we needed a vacuum bag that would stand up to such demands. I've tried vinyl bags (though not from here) and they were fine for a month or two but they would always get some small holes that were impossible to find and fix. This polyurethane bag is built better than anything I've seen. My shop foreman says its probably seen 375 jobs and its still sealing up like new. No holes, tears, or worries. This is what a vacuum bag should be.

  8. The Extreme Bag is Flawless

    Review by Keith Brinson

    I've read so many good things about the owner of this website that I felt pretty good about buying here. Yes, this is an expensive vacuum bag; but only in comparison to the other bags sold here. If you shop around for 30 mil polyurethane vacuum bags, you'll see that this is actually a very good price. Regardless of prices here or anywhere else, the Extreme vacuum bag is flawless. Its a pretty simple concept but the execution is well above par from another bag I bought at [another place].

    The valve stem is mounted in such a way that its virtually melted into the bag material. There's just no way for this to leak.

    Here's my ordering experience: I bought my bag on a Friday at about 10am. At noon, I had received a personal email from Joe saying that it was ready to go. He gave me a tracking number as well. Later that evening I tracked the shipment and the website said it would arrive on Tuesday. That is exactly when it arrived.

    Overall, I'm very happy with my purchase and I've already made a wish list of the veneers I want to order after my next paycheck.

  9. Puncture Proof

    Review by Edward Peterson

    This bag is built like a tank. There's no way anyone is going to puncture this bad boy and I doubt anyone has a project that this bag can handle. The closure system is excellent and is clearly heavy duty but its the valve stem (as Joe advertises) that really makes this bag such a winner.

    I use my bag for curved chest lids and plenty of basic flat work. This, along with my Project V2 Premium press system... a perfect conbination.

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