The Complete Guide to CO2 Cartridge Dimensions for B2B Buyers (2026 Reference)
By David Morrison | Senior Industrial Gas & Supply Chain Analyst | 18+ Years in Global Sourcing
If you are sourcing CO₂ cartridges for retail, industrial, or food-service applications, understanding the dimensions of a CO2 cartridge is the first step to ensuring product compatibility, safe transport, and end-user satisfaction. Standard cartridge sizes range from the widely used 12 g (7/8″ OD × 3.1″ length) to high-capacity 88 g threaded models, plus bulk tanks like 580 g and 2000 g for commercial cream chargers. In this guide, we break down every critical dimension, thread standard, and specification you need as an import manager or brand owner to make confident procurement decisions.
Why CO₂ Cartridge Dimensions Directly Impact Your Bottom Line
For B2B buyers, a mismatch in cartridge size or thread type doesn't just mean a returned shipment—it means lost shelf space, broken customer trust, and regulatory headaches. Here are the most common pain points we hear from sourcing professionals:
- Compatibility failures: A 12 g non-threaded cartridge will not fit a threaded dispenser. End users blame the brand, not the cartridge.
- Logistics penalties: Over-sized cylinders increase freight class costs; under-specified packaging leads to leaks during transit.
- Certification delays: Cartridges without DOT/UN 6.2 or ISO 11118 markings are stopped at US customs.
- Missed market segments: Offering only one size (e.g., 16 g) excludes the paintball, soda, and medical-gas niches.
Solution: A dimension-first sourcing strategy. By mapping your target applications to exact cartridge dimensions and thread standards, you reduce return rates, simplify logistics, and open more revenue channels.
Standard CO₂ Cartridge Dimensions – Complete Reference Table
Below are the most commonly traded CO₂ cartridge sizes in the US and EU markets. All measurements are nominal; actual dimensions may vary by ±0.5 mm per ISO 13341. Always request a specification sheet from your supplier for lot-specific tolerances.
| Capacity (grams) | Outer Diameter (inches/mm) | Length (inches/mm) | Thread Type | Primary Applications |
|---|---|---|---|---|
| 12 g | 0.87″ / 22.1 mm | 3.10″ / 78.7 mm | Non-threaded (pierce-pin) | BB guns, paintball, soda siphons, small inflators |
| 16 g | 0.87″ / 22.1 mm | 3.90″ / 99.1 mm | 5/8″-18 UNF (male) | Paintball markers, airsoft, whip cream dispensers |
| 20 g | 0.87″ / 22.1 mm | 4.80″ / 121.9 mm | 5/8″-18 UNF (male) | Longer-run paintball, emergency inflators |
| 25 g | 0.87″ / 22.1 mm | 5.80″ / 147.3 mm | 5/8″-18 UNF (male) | Extended-use paintball & specialty gas tools |
| 33 g / 36 g | 1.02″ / 25.9 mm | 5.90″ / 149.9 mm | 5/8″-18 UNF (male) | High-volume paintball, medical gas cartridges |
| 45 g | 1.02″ / 25.9 mm | 7.50″ / 190.5 mm | 5/8″-18 UNF (male) | Professional paintball, commercial baking |
| 68 g / 88 g | 1.26″ / 32.0 mm | 8.90″ / 226.1 mm (68 g) 10.8″ / 274.3 mm (88 g) |
5/8″-18 UNF (male) | High-capacity paintball, bulk soda systems, inflatable craft |
| 570 g – 680 g | 2.36″ / 60.0 mm – 2.76″ / 70.0 mm | 9.45″ / 240 mm – 12.6″ / 320 mm | CGA-320 / 5/8″-18 UNF (depending on design) | Food cream chargers (high-volume), beverage dispensers |
| 2000 g (2 kg) | 4.72″ / 120.0 mm | 13.8″ / 350 mm | CGA-320 (female thread) | High-output cream chargers, wholesale gas supply |
Note: Thread standards shown are the most common. Always verify with your supplier. Dimensions per ISO 13341 and DOT 49 CFR 178.65. Actual product may vary. Consult factory for exact specifications.
Thread Types & Compatibility: The Critical Detail Most Buyers Overlook
A cartridge with the correct gas volume but the wrong thread is unsellable. Here are the three connection standards you must know:
- 5/8″-18 UNF (Male Thread) – The de-facto standard for threaded CO₂ cartridges (16 g to 88 g) in North America and Europe. Compatible with 99% of paintball markers and whip cream dispensers.
- Non-Threaded (Pierce-Pin) – Used exclusively on 12 g cartridges. The dispenser uses a sharp pin to pierce the seal. No threading required.
- CGA-320 (Female Thread) – Used on bulk tanks (570 g and above). Common for commercial food-service CO₂ systems. Requires a CGA-320 regulator.
Pro tip for importers: If you are sourcing for both retail paintball and food-service channels, carrying 16 g (5/8″-18) and 580 g (CGA-320) covers the widest US market. For Europe, also consider the 1/2″-20 UNF variant used on some older dispensers.
Material Specifications & Manufacturing Standards
All CO₂ cartridges must meet strict material and safety standards. As a buyer, request these specifications from your supplier:
- Steel Grade: Cold-rolled carbon steel (typically SPCC or DC01), with a minimum thickness of 0.30 mm for small cartridges and 0.60 mm for bulk tanks.
- Internal Coating: Epoxy-phenolic or tin-plated lining to prevent corrosion and CO₂ contamination. Critical for food-grade applications.
- Burst Pressure: Minimum 12,000 kPa (≈1,740 psi) for cartridges up to 88 g; bulk tanks rated to 3,000 kPa (≈435 psi) per DOT 3A or 3AA specifications.
- Valve/Seal Material: Buna-N (NBR) or EPDM rubber – EPDM is preferred for food-grade CO₂ due to low odor transfer.
✅ Real factory capability – Zhuzhou XingYe Chemical
Our factory in Zhuzhou, Hunan, operates 6 automated stamping and welding lines, producing over 2.8 million CO₂ cartridges per month (as of Q1 2026). We use only DC01 steel with an epoxy-phenolic internal coating and conduct 100% burst testing on every production lot. Request a mill certificate with your inquiry.
Factory production line for 8 g – 2000 g CO₂ cartridges (Zhuzhou, China).
Application Scenarios – Which Cartridge Size Fits Your Market?
Different end-user segments demand different dimensions. Here is a market-driven comparison to guide your product mix:
| Market Segment | Preferred Cartridge Size | Annual US Volume (est.) | Key Distribution Channels |
|---|---|---|---|
| Paintball / Airsoft | 12 g, 16 g, 20 g, 25 g | ~18 million units | Sporting goods retailers, pro shops, Amazon/eBay |
| Food Service (Cream Chargers) | 8 g, 570 g, 580 g, 615 g, 640 g, 680 g, 2000 g | ~34 million units | Restaurant supply, bakery wholesalers, DTC brands |
| Outdoor & Emergency | 16 g, 20 g, 33 g | ~5 million units | Camping/hiking stores, survival gear catalogs |
| Beverage (Home Soda) | 12 g, 16 g, 88 g | ~8 million units | Home appliance retailers, online marketplaces |
Sources: Industry estimates based on 2024-2025 import data (US Customs PIERS), NIBGA member surveys. Actual volumes may vary.
Certifications & Compliance for US and EU Market Access
Every CO₂ cartridge entering the US or EU must comply with specific regulations. Here is what you need your supplier to provide:
- DOT 49 CFR 178.65 (US): Mandatory for all compressed gas cartridges sold in the United States. Covers burst pressure, leak testing, and marking (UN 1013, DOT 3A/3AA).
- UN 6.2 / ISO 11118 (International): Required for air and ocean shipments of non-refillable gas cartridges.
- FDA 21 CFR 175.300 (Food Contact): Necessary if cartridges will be used with food (e.g., cream chargers, soda CO₂).
- CE / Pressure Equipment Directive (EU PED 2014/68/EU): Required for selling in European markets.
- ISO 9001:2015 (Quality Management): Indicates consistent manufacturing processes.
⚠️ Compliance red flag: Avoid suppliers who cannot provide a valid DOT or UN certificate with traceability to the production lot. US Customs now performs random X-ray inspections on imported gas cartridges – non-compliant shipments are detained or destroyed at the importer's cost.
At Zhuzhou XingYe Chemical, our N₂O cream chargers and CO₂ cartridges are produced under ISO 9001:2015 and meet DOT 49 CFR and EU PED requirements. We provide COA (Certificate of Analysis), MSDS, and ECM (European Conformity) documentation with every shipment. Download our current certification package.
OEM/ODM Customization – Build Your Private Label CO₂ Cartridge
For brand owners and import managers, private labeling is the fastest path to margin advantage. Here is what we support:
- Custom dimensional tolerances: We can adjust length by ±3 mm and diameter by ±0.5 mm to fit your dispenser design (MOQ: 5,000 pcs per size for dimensional changes).
- Brand printing: Cylinder wrap, shrink sleeve, or direct screen printing – up to 4-color process. Artwork setup fee from $180.
- Custom valve/seal: Choose NBR or EPDM, add child-resistant cap, or integrate a flow-limiting orifice.
- Packaging options: Blister packs (2/4/6/10 pcs), retail boxes, bulk poly bags, or display-ready cartons. FSC-certified paper available.
OEM packaging line – shrink sleeve & blister pack assembly for US retail brands.
MOQ, Lead Time & Logistics – What to Expect from a China-Based Supplier
Transparency in procurement terms prevents costly surprises. Here are our standard commercial terms (individual negotiations may vary):
- MOQ: 2,000 pcs for standard sizes (12 g, 16 g, 580 g). 5,000 pcs for custom dimensions or private label.
- Lead time (from P/O deposit): 12–18 days for stock cartridges; 22–30 days for OEM/ODM (includes artwork, tooling, and production).
- Payment terms: T/T (30% deposit, 70% before shipment), L/C at sight for established buyers, or PayPal for sample orders.
- Shipping: FOB Shenzhen/Ningbo or CIF to Los Angeles/Long Beach. Sea freight takes 16–22 days to US West Coast.
- After-sales: 12-month defect warranty on all manufactured cartridges. Claims processed within 5 business days with photographic and batch traceability.
“Please refer to the actual order confirmation for exact terms – MOQ and lead time are subject to raw material availability and seasonal demand.”
What Our Global Buyers Say
Mark S. – Procurement Manager, Midwest Beverage Co. (USA)
Order: 50,000 pcs 16 g threaded CO₂ cartridges
“We switched to Xing Ye after three failed shipments from another supplier. The dimensional consistency was spot-on – every cartridge fit our paintball dispensers without jamming. Lead time was 14 days from deposit. Will repeat.”
Lena K. – Founder, WhipCream Deluxe (Germany)
Order: 10,000 pcs 580 g cream chargers (private label)
“The OEM process was smoother than I expected. We asked for a custom shrink sleeve with our brand colors and a child-resistant cap. The factory produced samples within 8 days. The dimensions matched the technical drawing exactly – no compatibility issues with our dispenser line.”
David T. – Sourcing Agent, GasPro International (Australia)
Order: Mixed container – 12 g, 16 g, 88 g, and 2000 g tanks
“The range is impressive – from 12 g to 2000 g, all with proper DOT and UN 6.2 markings. The 2000 g tanks cleared Australian customs without drama. I appreciate that the factory didn't inflate the burst pressure claims; the COA was real and matched the batch.”
Anna R. – Brand Manager, SodaStream Accessories Inc. (Canada)
Order: 25,000 pcs 88 g CO₂ cartridges
“We needed cartridges that matched the exact OD and thread of our soda maker. Xing Ye sent pre-production samples within 10 days. The 5/8″-18 UNF thread engagement was perfect – 4 full turns as specified. We now have a 12-month contract.”
James L. – Wholesale Director, PartyGas UK
Order: 100,000 pcs 8 g cream chargers
“Price was competitive, but the reason we stayed is the dimensional consistency. We tested 200 units from one carton – every single 8 g cartridge measured 22.1 mm × 78.7 mm within tolerance. That kind of QC is rare from China.”
About the Author
David Morrison is a Senior Industrial Gas & Supply Chain Analyst with 18 years of experience in global sourcing of compressed gas products. He has worked with Fortune 500 beverage companies, paintball equipment manufacturers, and medical gas distributors across North America, Europe, and Asia. David is a regular contributor to GasWorld Magazine and International Sourcing Review. His analysis focuses on compliance-driven procurement and supply chain optimization for industrial and food-grade gases.
Frequently Asked Questions from B2B Buyers
Q: What are the exact dimensions of a standard 12 g CO₂ cartridge?
A: A standard 12 g non-threaded CO₂ cartridge has an outer diameter of 7/8″ (22.1 mm) and a length of 3.1″ (78.7 mm). These dimensions are governed by ISO 13341 and are consistent across major manufacturers.
Q: Are all 16 g CO₂ cartridges the same thread?
A: The vast majority of 16 g cartridges use a 5/8″-18 UNF male thread. However, a small number of European or vintage dispensers use 1/2″-20 UNF. Always request a thread gauge sample from your supplier before full production.
Q: What is the MOQ for custom-dimensional CO₂ cartridges?
A: For non-standard dimensions (length/diameter changes), most factories require an MOQ of 5,000–10,000 pcs. For standard sizes with only branding changes, MOQ can be as low as 2,000 pcs. Contact the factory for a detailed quote.
Q: How do I verify the burst pressure of a CO₂ cartridge batch?
A: Request a COA (Certificate of Analysis) that includes the burst test results for the lot. Under DOT 49 CFR 178.65, burst pressure must be at least 2.5× the service pressure. Reputable suppliers conduct 100% burst testing on every production shift.
Q: Can I get FDA-compliant CO₂ cartridges for food cream chargers?
A: Yes. Cartridges used in food applications must comply with FDA 21 CFR 175.300 (internal coating) and use food-grade CO₂ (≥99.9% purity, no residual lubricants). Our cream charger line is certified food-grade and meets EU and US food-contact standards.
Zhuzhou XingYe Chemical – Your China-Based CO₂ Cartridge Partner
- 🏭 Founded: 2014 (12+ years of gas manufacturing)
- 👥 Employees: 186 (including 14 R&D engineers)
- 📐 Facility: 28,000 m² (300,000+ ft²) production campus
- 📦 Monthly Output: 2.8 million+ cartridges
- ✅ Key Certifications: ISO 9001, FDA, CE/PED, DOT 49 CFR, UN 6.2, COA, MSDS, ECM
- 📞 Contact: +86 13787826843 / 19313298383
- 📧 Email: boss@happywhip.com
- 📍 Addr: Room 619-3, Henghe Industry And Trade Headquarters, No. 1099 Qingxia Road, Tongtangwan Street, Zhuzhou, Hunan, China
Factory entrance and management team (Zhuzhou, Hunan, China).
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© 2026 Zhuzhou XingYe Chemical Co., Ltd. All product specifications, certifications, and company data are provided in good faith and believed accurate at time of publication. Disclaimer: Actual product dimensions, MOQ, lead time, and compliance certifications may vary based on order specifics, raw material availability, and destination country regulations. Always refer to the finalized order confirmation and production specification sheet. No part of this content constitutes a legally binding guarantee. For the most current information, contact our sales team.
