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Two-Component Adhesive Dual Cartridges
Two-Component Adhesive Dual Cartridges — Mixpac & Nordson Compatible, Factory-Direct OEM
Our cartridge 2-K comes empty and ready to slip into the dispensing guns you already have – and now comes with capacity options of 50mL up to 1500mL – every size from a standard ratio – straight from the plant floor in Kunshan, China.
System Description // OEM Details
Ebestron manufactures the blank double- component adhesive double cartridges – packaging parallel device designed to keep Part A and Part B in separation until they engage with our static mixer. You are supplied the cartridge, piston, and closure, but Ebestron fills each one with your epoxy, acrylic, silicone, MMA or polyurethane. Whether your system calls for epoxy with our double cartridge, or ultra-fast setting methacrylate, each of our cartridges are manufactured for standard Sulzer Mixpac and Nordson EFD dispenser compatibility; eliminating tooling investment if you choose to switch suppliers. The right choice for adhesive manufacturers, contract manufacturers and OEM clients that need Branded System compatibility but at a direct from the factory price.
50–1500 mL
Cartridge sizes
1:1 · 2:1 · 4:1 · 10:1
Mix ratios
A / B / C / F
Mixpac matched
PP · PA · PBT
Barrel materials
CE / RoHS
Compliant materials
OEM · 5–10 days
Production time
Factory-Direct
The Real Cost of an Empty Two-Component Cartridge Isn’t the Cartridge
Almost any buyer looking to find cheap two-part adhesive packaging begins their search by comparing price and looking at plastic cartridge – then running into an obvious issue. 600 mL empty Sulzer Mixpac and medmix brand cartridges can be found from U.S. suppliers at prices ranging around $2.63 each, while their Nordson EFD 300 mL empty epoxy cartridge counterparts come in around $2.64. But the two seem perfectly in sync until the customer realizes that the exorbitant cost is for something other than the cartridge.
It’s in the dispensing mechanism.
A branded A-System 50mL cartridge kit- gun, cartridge frame included- comes in at the start price for $1,520, a GreenLine B-System 50mL kit for $1,750. Once your line is invested in a particular patented gun, the refill cost becomes captive. Two cartridges keeps component, their pair of reactive partners, safely isolated, only to be reunited when the static mixer engages and presses them into reaction on-ratio-the key to the system’s grip being the gun’s and flange’s geometry and lock, not a disposable barrel. It’s the very wedge we’re made for at Ebestron: we can make your proprietary flange, piston interface, proprietary gun available and your cartridge a factory-direct consumable price. We can’t and won’t assert our cartridges are cheaper in all circumstances, the cost savings is honest and finite: if through put increases beyond some threshold level, massed supply are always more cost effective through a metered mixing machine. Where they shine – middle-low volume dispense – we make it honest.
We won’t claim our cartridges beat bulk at every scale — that trade-off is honest, and not always in your favor above a high-volume threshold — but at small to medium volume the factory-direct consumable keeps the recurring cost fair.
Ebestron Dual Cartridge Range — 50mL to 1500mL, Every Standard Ratio
Choosing the wrong size or ratio is genuine sourcing failure: order a 4:1 material into a 2:1 cartridge and chamber geometry yields an off-ratio mix whatever your dispense. Our range covers the entire Industrial spread so the cartridge is engineered to match your data sheet not vice versa. Please find below complete product range, specification for each line and available pricing tiers.
50ml Dual Cartridges
50 mL · 1:1 / 2:1 / 4:1 / 10:1
PP & PA · A/B-System
200ml Dual Cartridges
200 mL · 1:1 / 2:1
PP/PBT · C/F-System
400ml & 600ml
400 mL 1:1/2:1/4:1 · 600 mL 1:1
PP/PE · C/F/J-System
Empty Cartridges
75 / 100 / 1500 mL
bulk wholesale · private-label
Compatible Range
Drop-in replacement range
matched flange & piston
Engineering Specifications
The below table assigns a size, associated predominant ratio, and material of barrel, as well as overall physical envelope, to allow engineers to ensure that their guns and trays will fit before requesting samples
| Size | Ratios | Material | Height | Barrel Dia. | Typical use |
|---|---|---|---|---|---|
| 50 mL | 1:1 / 2:1 / 4:1 / 10:1 | PP, PA | 118–122 mm | 21.7 mm (10:1: A 22 / B 7) | Dental, electronics, small-batch |
| 200 mL | 1:1 / 2:1 | PP, PBT | ~165 mm | ~36 mm | Automotive aftermarket |
| 400 mL | 1:1 / 2:1 / 4:1 | PP, PE | 220 mm | 44.5 mm | Industrial bonding |
| 600 mL | 1:1 | PP | 207 mm | 50 mm | Construction anchoring |
| 1500 mL | 1:1 | PP | 218 mm | 77.6 mm | High-volume / spray |
Tech Notes
All sizes in the table are molded in-house to Ebestron tooling specifications, so the dimensional envelope-height, barrel diameter, and flange-is held lot-to-lot instead of varying with whoever is in line to fill the order. And that repeatability is what lets you qualify a single component cartridge sample and reorder it with confidence, instead of validating every single batch that arrives.
From dual cartridge epoxy and acrylics to silicones and MMAs — and empty epoxy cartridges ordered in bulk for resale — every line above is held to the same matched-footprint standard, so the cartridge fits your material’s data sheet rather than the nearest catalog part.
Patent: US 2017/0259296 A1
Mix-Ratio Decoder — Ratio, Material & Piston for Your Chemistry Engineer
Select a cartridge with the wrong number, and you get soft or patchily cured or uncured adhesive after the part has already shipped. The volumetric mix ratio on your technical data sheet is the lynchpin; from there follow the sequence of chamber structure, mixing difficulty, total volume, and finally piston size. Bypass one step in the sequence and you’re adjusting the wrong variable.
1:1
Equal Chambers
- Mixing demand: Standard mixer; balanced viscosity
- Typical chemistry: Many epoxies, silicones
2:1 / 4:1
Stepped (resin larger)
- Mixing demand: Mixer must fully incorporate smaller activator side
- Typical chemistry: Filled / pigmented epoxies, PU
10:1
Activator under 10%
- Mixing demand: Tight tolerance; mixer matching critical
- Typical chemistry: MMA / methacrylate, fast-set
Take a 10:1 methacrylate for an automotive panel-bonding application as a worked example: the activator side sits under 10% of the chamber, so a stepped 10:1 body molded in nylon — the volatile barrier an MMA needs for shelf life — paired with a vented piston that clears air on the rear-fill line gives a repeatable bead.
Put the same material in a 1:1 PP cartridge and it under-doses the activator and never reaches full strength. That is the match Ebestron specs against your actual chemistry, where catalog suppliers ship one generic piston for every job.
Barrel: polypropylene (PP) offers broad chemical resistance and is by far the least expensive for epoxies, urethanes, and silicones; nylon (PA) is required for MMA and acrylics since the volatile content in those materials makes a barrier necessary for their shelf-life – however, it is an absorbent for moisture.
PBT provides the highest dimensional stability and alignment of the piston to barrel, yet is less resistant to impact; PP is less ideal if your MMA application will not tolerate short shelf-life, so selecting polypropylene for your MMA application actually is a quality selection rather than just a cosmetics election.
Piston: self-venting (vented) piston exists to release trapped air as your kit is filled in the back – not a benefit you’ll use with every fill. When used after filling, the non-vented piston provides a fully sealed chamber for oxygen and moisture resistance to assure longer shelf-life.
The sealing-ring piston is used with high viscosity materials and at high pneumatic pressures to inhibit back-filling – whereas the non-sealing piston is selected to reduce friction in high-viscosity applications dispensed with a manual or air powered dispensing gun. All Ebestron pistons are specified to match your application fill-process and chemistry; they are not specified for universal use.
Empty vs. Branded Cartridges — The Cost Ledger
Cartridge-sealing patent: US 7,748,577 B2
01
Procurement
Procurement
Context
Understanding brand markups
We all know that procurement departments must be suspicious of an offer that is only cheaper than an competitor; in most procurement forums the invariable caution,is to expect more cost when the price is the lowest because of the risk of false credentials, missing lead times, and poor product quality. As such, the cost justification is not that Ebestron will do you better. This is the story of value when brand markup exists where the cost of dispensing, whether filling through the front or back, should not be further inflated.
02
Retained
Retained
Value
Avoided re-tooling cost
$1,500+
Branded dispensing-system kit you keep — instead of re-buying — by sourcing matched compatible empties
Based on branded A-System 50mL kit ($1,520) and GreenLine B-System 50mL kit ($1,750), U.S. distributor pricing. Per-unit cartridge prices remain a thin delta; the saving is avoided re-tooling.
03
Cost
Cost
Ledger
Side-by-side breakdown
| Cost element | Branded system route | Ebestron factory-direct |
|---|---|---|
| Empty cartridge (50mL, at volume) | $1.54–$2.50 / unit | Factory-direct quote |
| Empty cartridge (600mL) | ~$2.63 / unit | Factory-direct quote |
| Dispensing gun / system | $520–$1,750 kit (captive) | Reuse your existing gun |
| Pack sizes | Often hundreds–thousands only | Flexible, MOQ-friendly |
| Customization | Fixed branded SKU | OEM logo / color / packaging |
Your individual ratio costs will be determined by the size, ratio, material and order volume, all factors that are clear. You can do no better for more details.
The 2-K Cartridge System Crosswalk — Mixpac, Nordson & Techcon Cross-Reference
Mixing-ratio patent: US 7,140,797
01
The Proprietary System Trap
Here is the trap that sinks more cartridge orders than price ever does: most “systems” are proprietary letter codes that do not cross from one supplier to the next. Techcon says it very well-“Techcon 200mL and 400mL A-System outlets are similar to other suppliers’ C-System outlets; 400/490mL B-System outlets are similar to other suppliers’ F-System outlets. Please confirm compatibility before purchase.”
On a Nordson Ratio-Pak, an A-side body fits only its complementary B-side; shove the wrong cartridges into a higher ratio and the device simply won’t seat with the required gun-tip geometry. The real risk is not price, it’s compatibility.
02
The Volumetric Mismatch
Then there’s a second, more costly mismatch hidden away in your material’s technical data sheet. Take a 10:1 ratio mixed “by volume” that shows up on the label as 10:1 – for the exact same product, it might be nearly 13.5:1 “by weight.” This occurs because the base and catalyst do not weigh the same amount per unit of volume.
According to a Nordson/Plas-Pak patent, they are not “always admixed in a 1:1 ratio,” and the ratio selected is keyed to the cartridge diameter. Since dual cartridges are true volume dispensers through their chamber geometry, orders of a cartridge ratio derived from the weight-based number are under shot on the catalyst and produce a soft, patchy cure that will subsequently be blamed on the adhesive. Our Crosswalk matches each recommendation to the specific volumetric ratio for your specific brand of interface.
| Ebestron size / ratio | Sulzer Mixpac | Nordson EFD | Techcon SBS | Outlet / interface |
|---|---|---|---|---|
| 50 mL 1:1 / 2:1 | A-System (AA/AB) rect. flange | 50 mL Bayonet (PA/PP) | 50 mL 1:1/2:1 | Bayonet twist-on |
| 50 mL 4:1 / 10:1 | B / BS-System round flange | 50 mL 4:1 / 10:1 | 50 mL 10:1 | Bayonet / S-flange |
| 200 mL 1:1 / 2:1 | C-System (AC) | 200 mL (215/222 mL usable) | A-System ~ others’ C | Bell-mouth |
| 400 mL 1:1 / 4:1 | F-System (AF) | 400 mL (406 mL usable) | B-System ~ others’ F | Bell-mouth, open/closed |
| 600 mL 1:1 | C / J-System | 600 mL (630 mL usable) | 490 mL B-System | Closed-end |
| 1500 mL 1:1 | F / J-System (AJ 1500) | 1500 mL (750+750 mL) | — | Side-by-side |
As dispenser is the open standard and cartridge is the commodity component, matched empty cartridges are a true drop-in fit; this is precisely what medmix and Big Dog are doing with their new “no new guns, no proprietary mixer tips, no process change” offerings like greenLine and RELOAD.
Not sure which letter code your gun uses?
// System fitment verification & compatibility check
Quality Control, Seal Integrity & CE/RoHS Compliance
The mode of failure that buyers fear is one that doesn’t make it onto the datasheet: “blow-by”. Cured adhesive in the cartridge tip, or a piston that allows one side to compress and release, leaks past the plunger and silently breaks the mix ratio – the assembler has to check plunger depth before every run to catch it. So whichever cartridge we make, it’s only as good as its seal, and so we test it in the way the packaging industry really measures sealing, rather than insisting “high quality”..
Testing Criteria
Seal strength
What it controls
Force to separate the piston/closure seal
Test standard
ASTM F88 (peel)
Seal integrity
What it controls
Barrier against air / moisture ingress
Test standard
ASTM D3078 (bubble leak)
Burst pressure
What it controls
Resistance to dispensing & storage pressure
Test standard
ASTM F2054 / F1140
Volume / ratio accuracy
What it controls
On-ratio metering, no off-ratio first shot
Test standard
Vented-piston air evacuation
CE
Material conformity
RoHS
Heavy-metal-free plastics
ISO 9001
QMS framework
AQL
ISO 2859-1 sampling
“We size every piston to the fill process — a vented piston for a rear-filled, high-viscosity epoxy so air escapes before it can spit an off-ratio first shot, and a sealed barrier piston where the customer needs months of shelf life. Most field leaks we see aren’t the plastic; they’re the wrong piston for the chemistry.”
Industry 4.0 Standard
Advanced Production Line Automation
Engineered for absolute precision, uninterrupted speed, and seamless scalability. Explore our state-of-the-art automated manufacturing facilities driving global industry standards.
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Patent: US 7,748,577 B2
Industries We Serve
Order the wrong footprint for your market and your customers won’t be able to load it into the dispensers they already standardized on. Ebestron supplies each as a drop-in at the correct size and ratio for that industry so adopting our cartridges will never necessitate a downstream gun change.
Automotive / Transportation
Panel bonding, seam sealing, and structural repair adhesives in 200/300mL containers.
Potting & Encapsulation
Thermally conductive two-part compounds adhesives in 50mL cartridges.
Construction & Anchoring
Chemical anchoring and structural-bonding resins in 600mL containers.
Aerospace & Marine
Coaxial & side-by-side footprints for high-end adhesives and sealants.
Medical & Dental
50ml volumes for low-waste, precision two-part dispensing.
Dual Cartridge Dispensing & Optimization Solutions
Cartridge System Compatibility Finder
Match your existing dispenser to an Ebestron empty dual cartridge
Access ToolMix-Ratio & Material Selector
Match cartridge material and piston to your two-part chemistry
Access ToolFAQ — Frequently Asked Questions
Yes. We build to the recognized A/B/C/F-System and Nordson footprints so the cartridge seats in your existing gun and static mixer. Because cross-brand letter codes don’t always line up — a Techcon A-System outlet resembles another supplier’s C-System — we confirm the exact interface against your dispenser before you order, and samples let your team verify the fit physically.
The ratio is the volume of resin to hardener. Equal chambers handle 1:1; the 2:1 and 4:1 use a stepped design with a larger resin side; the 10:1 holds under 10% activator, which demands tight chamber accuracy and careful mixer matching. Always take the ratio from your material’s data sheet by volume, not by weight — the two can differ significantly for the same product.
Match it to the chemistry. PP suits epoxies, polyurethanes, and silicones with broad chemical resistance at the lowest cost. PA (nylon) is needed for acrylics and MMAs because their volatiles require a barrier for shelf life. PBT gives the best dimensional stability for piston alignment. Ebestron will recommend the right one against your material once we know it.
Yes. Empty cartridges ship in flexible, MOQ-friendly quantities for fillers and OEM buyers, with private-label options (logo, color, packaging). We separate product MOQ, packaging MOQ, and lead time in the quote so there are no surprises, and we offer contract filling if you’d rather receive cartridges filled.
Yes — request free samples and we’ll send representative cartridges so your engineers confirm fitment, seal, and dispensing in your own gun before committing to production.
The cartridge keeps the two reactive parts separate until the static mixer combines them on demand, at a fixed ratio, with the exact amount you need. That removes the weighing, hand-mixing, waste, and direct material handling of bulk two-part systems — and gives repeatable cure quality batch after batch.
Why We Build This
Ebestron has spent its years in two-component packaging on one unglamorous problem: making a $2 plastic cartridge meter two reactive chemistries on-ratio, shot after shot, in a gun we didn’t build. The size envelopes, flange interfaces, and piston-venting guidance on this page come from our own tooling and QC work matching Mixpac and Nordson footprints — not from a catalog. Where a number depends on your material or order, we say so rather than print a figure that wouldn’t survive your audit.
[SYS-01] Engineering · Procurement · Plant Management
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