PrimeWeld 75% Argon 25% CO2 Bottle 40CF | DOT 3AA | USA CGA 580 Valve | Best Gas Blend for MIG Welding | Cylinders Full & Ready to Use
Condition: New
Buy Now, Pay Later
As low as
$41.50
/ mo
Learn more
- – 6-month term
- – No impact on credit
- – Instant approval decision
- – Secure and straightforward checkout
Ready to go? Add this product to your cart and select a plan during checkout.
Payment plans are offered through our trusted finance partners Klarna, Affirm, Afterpay, Apple Pay, and PayTomorrow. No-credit-needed leasing options through Acima may also be available at checkout.
Learn more about financing & leasing here.
Selected Option
Free shipping on this product
30-day returns
Learn more
Returnable until Jan 31, 2026
To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
Availability:
In Stock.
Arrives
Sunday, Jan 18
Recently Viewed
Size: 40CF
Features
- Welding Gas to Your Door - Get PrimeWeld's industrial grade 75 %Argon 25% CO2 gas cylinder delivered right to your door. We offer different mixtures for any application, and you can purchase a tank without worrying about costly rental fees or wasted trips out to your local welding supply shop.
- The Specs - Our 40CF Argon CO2 welding gas tank arrives full and ready to go. Unlike competitors, our cylinders come fully certified, DOT 3AA, and 10-year date stamped. You'll never have to worry about your tank being turned away for a refill.
- Best Gas for MIG - Our blend of Argon CO2 is the perfect all-purpose MIG welding gas. It's a cost-effective option that can be used to weld most metals, including mild steel and nonferrous metals, ensuring a desirable combination of arc stability, puddle control, and reduced spatter.
- PrimeWeld's Promise - If for any reason you're not satisfied with your Argon CO2 welding gas tank, simply reach out to Customer Support and we'll make things right for you!
Description
PrimeWeld offers a variety of Argon CO2 welding gas cylinders for sale. Hobbyists and professionals can select from 40CF, 80CF, and 125CF tanks to find the perfect size for their needs and budget. We also offer pure Argon, saving customers the hassle of driving out to their local gas supplier or weld supply shop. Each Argon CO2 gas cylinder is fully certified, DOT 3AA, and 10-year date stamped. Our tanks are a low-cost option compared to leasing, and we offer a 100% satisfaction guarantee. You don't have to worry about putting a deposit down, and you're not locked into any single supplier for refills. PrimeWeld takes pride in offering its customers an easy, affordable way to purchase the welding gas they need.
Manufacturer: PRIMEWELD
Part Number: CF40-FULL-75/25
Item model number: 401956
Size: 40CF
Date First Available: January 21, 2023
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Sunday, Jan 18
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
- Klarna Financing
- Affirm Pay in 4
- Affirm Financing
- Afterpay Financing
- PayTomorrow Financing
- Financing through Apple Pay
Learn more about financing & leasing here.
Top Amazon Reviews
I have been welding with flux-core wire for a long time and was wanting to step up my welding game with gas shielded. My only problem was trying to source a tank that wasn’t going to cost me an arm and a leg. Every bib-box store that I went to either wanted me to buy an empty tank, then pay to fill it, or pay costly monthly rental fees for a tank that I use for hobby welding. I was getting frustrated when I thought why not look on amazon. This tank is perfect for my application, is a GREAT value for the money, comes filled with gas, and is a brand new tank that I own. Anyone that I know who is looking to get any tanks will be getting referred here. I would gladly buy again.
...
show more
Reviewed in the United States on September 14, 2025 by Stephen C
I dont write reviews, so pay attention. When someone sells you a product like this, it seems absurd. However, as others have mentioned.. i checked the tank psi right off the truck and it measures spot on around 2450-2500psi. That's all that should matter to you besides the DOT stamp, which is also true to spec within date range. Well it seems my addendum was rerconned. Tldr: packaging is no good, product is excellent. I suggest to use lock wire instead of shrinkwrap on the valve handle.
...
show more
Reviewed in the United States on April 30, 2025 by M
Local area "big" gas company wanted $500+ for same type of product. At $300 FILLED! this is one of the better deals I've come across. Works perfectly! Im not a welder by trade but its exactly what I needed to convert my Millermatic 180 to MIG from Fluxcore great deal!
Reviewed in the United States on September 25, 2025 by Melissa L. Lefko
Very convenient way to start up welding and a fair price
Reviewed in the United States on September 23, 2025 by Kindle Customer
Shipping was fast. The bottle looks nice, and has functioning perfectly.
Reviewed in the United States on November 27, 2025 by Bret M
Size: 125CF
FedEx just dropped my 125cf tank off. I immediately put my gauges on it and it was a solid 2150, I wont bitch about the tank saying 2265 haha. Cap came of easy, threads are clean and everything looks good. Has the DOT marks with the star etc. Build date was 2025. Cant ask for anything else. I am satisfied with my purchase.
...
show more
Reviewed in the United States on December 22, 2025 by WTFOver WTFOver
Size: 125CF
I decided on this tank because the seller seemed to be more reputable than others. Tank arrived quick and in good condition and was full, I have no complaints.
Reviewed in the United States on June 26, 2025 by Zisa
Size: 125CF
Local welder supply shops in my area want nearly $500 for a full 80CF cylinder. This "full" 125CF cylinder was just short of $400 shipped to my door. Pretty hard to beat. The cylinder is DOT stamped, so I don't have much concern about getting it refilled or exchanged when it runs out. And if I'm reading it right, I believe it says the original hydrostatic test was in 08/2024, so this is literally a brand new cylinder. The cap came off with zero effort after I broke it free. Now a few gripes. I've seen other reviews reporting pressures north of 2000psi. I put my regulator on the cylinder as soon as I got it out of the box, and it clocked in around 1650psi. If ChatGPT's calculations are correct, that's only about 91CF of gas. I wouldn't call that "full," but in the end it's still a better deal than the local shops 80CF cylinder. I ordered this Tuesday, and it arrived today, Thursday. Quick shipping! The original expected delivery date was Saturday, which I was hoping for so that I could be home to sign for it. Instead, I had to deal with my MIL coming to my house while my wife and I were at work to sign for it, and handle a heavy tank of gas.. a minor annoyance, when quick shipping is usually a great thing. I've seen the pictures of other reviews where the packaging looked great, and the tank was in perfect condition. My cylinder arrived with the only padding in the box being an expanding foam bag at the head of the bottle. The gas label also got kind of torn up. Doesn't affect the product at all.. I was just kind of expecting the same packaging that I've seen in other reviews on here. So even after my whining about stuff that's not really a big deal, you can't beat this. If you want to own your own DOT-stamped 125CF cylinder of 75/25, there's no reason to look any further than this listing right here. Don't bother with that cheaper listing where you're most likely going to get a useless ISO-stamped tank.
...
show more
Reviewed in the United States on September 13, 2024 by DrTrae DrTrae