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✦ Industrial Precision Standard
50ml Dual Cartridges
50ml Dual Cartridges, Two-Component Adhesive Packaging in 1:1, 2:1, 4:1 & 10:1 Ratios
50ml dual cartridges are ready to go, built specifically for two-part adhesive formulators and fillers. Injection-molded to a snug, lot-controlled fit so your epoxy, polyurethane, MMA and acrylic seals, seats and dispenses cleanly across the standard 50ml applicator guns you already run.
4+
Standard
Mix Ratios
Mix Ratios
100%
Dispenser
Compatible
Compatible
Zero
Cross
Contamination
Contamination
OEM
Bulk Supply
Ready
Ready
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Product Name
Ebestron 50ml dual cartridgeComponents
Side-by-side cartridge & matched partsMix Ratios
1:1 · 2:1 · 4:1 · 10:1Materials
PP · PA · PBTVolume
50 ml (twin)Compatibility
Mixpac® / Nordson®Supply
OEM, Private label & bulkIncluded
Cap · Piston · MixerWrong Cartridge Fit Means Leaks, Wasted Adhesive, and Line Downtime
In use: metered two-part dispense through a static mixer.
A 50ml dual cartridge is the side-by-side twin barrel that holds the two parts of a reactive adhesive apart until the moment of dispense, then meters them through a static mixer at a fixed ratio. When the barrel geometry, piston or outlet interface is knocked out of tolerance by only a small amount, and it doesn’t take much, your failures appear on your filling line, not in the lab: a piston that tilts and allows Part A to diffuse into Part B, an outlet that won’t seat a mixer cleanly, or a bung that blows back under dispensing pressure and smears cured adhesive across the workstation.
Industry Compliance & The Ebestron Standard
Industry guidance is blunt on this: an incorrect interface “will fail to seat securely or create a leak point under dispensing pressure,” and overpressure forces adhesive behind a weak bung until it “malfunctions causing the product to leak out.” That’s why procurers are told to verify cartridge fit with sample testing before placing a bulk order.
Ebestron builds the 50ml dual cartridge, the empty packaging hardware, not the adhesive, for exactly this audience. We injection-mold each barrel under control that hold geometry, piston-to-wall sealing, and rigidity in specification, then ship the matched cap, piston, and static mixer with every barrel, so you and your customer receive a fully qualified dispensing system.
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For an adhesive formulator or contract filler in the US or EU, every one of those is a real cost…
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– scrapped material, a re-validated batch, or a customer complaint about a cartridge that drips.
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Take a tangible example: an EV-battery assembly supplier filling a 2:1 structural epoxy at 50 ml discovers that a loose-tolerance barrel lets adhesive squeeze out behind the bung under gun pressure.
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The bung malfunctions, and a whole shift of cartridges is quarantined.
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Our cataloging below, by ratio, dispensing system and cartridge material, walks you through selecting an Ebestron 50ml dual cartridge.
Technical Patent
The piston-tilt mechanism behind most seal leaks is documented in U.S. Patent 8,875,947; for background on packaging selection, see the Adhesives & Sealants Industry reference.
1:1
A-system · PP
2:1
A-system · PP
4:1
A-system · PP/PA
10:1
B/S-system · PBT
50ml Dual-Cartridge Selection, Decision Matrix
| Mix ratio | Cartridge system | Barrel material | Best-fit chemistry | Typical use |
|---|---|---|---|---|
| 1:1 | A-System (square-back) | PP | Epoxy, polyurethane, silicone | General structural bonding, potting |
| 2:1 | A-System (square-back) | PP | Epoxy, polyurethane | Higher-resin structural adhesives |
| 4:1 | A-System (square-back) | PP / PA | Epoxy, acrylic | Resin-rich formulations |
| 10:1 | B-System / S-System (round-back) | PBT | Methacrylate (MMA), acrylic | Fast-cure, difficult substrates |
Engineering note, what “matched” means
Piston To Barrel Fit Is Critical 50ml cartridges have a precision controlled relationship between the piston and barrel diameter. Any clearance around the piston can allow Part A and Part B to bypass under back-pressure and can shorten shelf life and alter the delivered ratio. Each Ebestron cartridge has a molded, matched piston and the appropriate fit and style of bayonet and bell-mouth outlet that interfaces cleanly with compatible static mixers, so there are no dispensing dead zones or wasted material. Our dimensional process means the sample you approve is the same lot you receive in bulk.
Specify the wrong piston for a 4:1 fill and the dispensed ratio drifts off-formula at the bead, an automotive panel-bonding line that moved to matched-piston 2:1 PP cartridges cut its ratio-related reject rate and stopped re-validating batches mid-run. We offer each configuration as a filled, self-fillable, or empty 50ml cartridge. Additional 200ml, 400ml and 600ml volumes are available for customers standardizing one supplier across a range of two component adhesive cartridges.
Need a ratio or barrel material not shown?
Get a bulk / OEM quote →The 50ml Dual-Cartridge Compatibility Matrix
Procurement Challenges & Configuration Solutions
The most common procurement mistake is a two component cartridge whose barrel fits the dispenser but not the chemistry or chemistry but not the mixer, whether its a two component epoxy cartridge for self-filling or an entire two part adhesive cartridge program. One such mistake for a dental formulator selecting a 10:1 MMA into a PP cartridge is that the cartridge could still pass incoming inspection while failing the inner seal within six months, with as much as 20ml of product lost per nozzle with standard mixers. Our matrix show all combinations of ratio, barrel geometry, chemistry, dispenser type, and static mixer.
For example, a marine-composite shop bonding FRP hull panels with a 2:1 epoxy runs a 50ml PP A-System barrel into an A-style helical mixer on the 2:1 guns it already owns, one matrix row, qualified once, then reordered for every hull batch with zero re-validation. That single fixed row simplifies sourcing for good. Source information on these configurations is published in Adhesives & Sealants Industry guidelines.
PRECISION INTERFACE
| Ratio | System / back shape | Cap | Barrel | Chemistry fit | Static mixer | Compatible dispenser |
|---|---|---|---|---|---|---|
| 1:1 | A / square-back | Standard | PP | Epoxy, PU, silicone | A-style helical / quadro | 50ml 1:1 manual or pneumatic gun |
| 2:1 | A / square-back | Standard | PP | Epoxy, PU | A-style helical / quadro | 50ml 2:1 gun (Mixpac® DMA50-class) |
| 4:1 | A / square-back | Standard | PP / PA | Epoxy, acrylic | A-style helical | 50ml 4:1 gun |
| 10:1 | B / S / round-back | Gray | PBT | MMA, acrylic | S-style / B-style mixer | 50ml 10:1 S-system gun |
| 1:1 | A / square-back | Standard | PA | Acrylic (short-fill) | A-style | 50ml 1:1 gun |
| 2:1 | A / square-back | Standard | PA | MMA (low-volatile) | A-style | 50ml 2:1 gun |
| 4:1 | A / square-back | Standard | PP | Polyurethane | A-style | 50ml 4:1 gun |
| 10:1 | B / S / round-back | Gray | PBT | Anaerobic / MMA | S-style | 50ml 10:1 gun (Nordson® EFD-class) |
| 1:1 | A / square-back | Standard | PP | Two-part silicone | A-style large-bore | 50ml 1:1 gun |
| 2:1 | A / square-back | Standard | PP | Epoxy (filled) | A-style large-bore | 50ml 2:1 gun |
Material Engineering
Barrel Material Selection
Matching PP, PA & PBT to Your Adhesive Chemistry to drastically extend your product shelf life.
Shelf Life vs. Cost
You aren’t shopping for a cost in barrel material. Rather, you’re shopping for shelf life. An incorrect polymer readily permits leakage or permeation of active components, and one cartridge that registers perfect when delivered might not even pass your aging studies six months later.
Beyond Standard Rules
If you stick to the commonly held standard rule of polypropylene for all epoxies, while using nylon for volatile acrylics—your barrel material gets the job done. Properly selecting a barrel to the component chemistry inside can extend shelf life from one to five years.
Standard
PP (polypropylene)
Best-fit chemistry
Epoxy, polyurethane, two-part silicone
Why
Good barrier + dimensional stability
Watch-out
Not ideal for high-volatile MMA
Barrier+
PA (polyamide/nylon)
Best-fit chemistry
Acrylics, methacrylate (MMA)
Why
Holds volatile content effectively
Watch-out
Moisture-sensitive storage
Rigid Pro
PBT
Best-fit chemistry
MMA, anaerobic (10:1 S-system)
Why
Chemical resistance + rigidity
Watch-out
Requires gray-cap geometry
Compatible vs. OEM: Where Leaks Actually Come From
Here’s the honest version of the “genuine versus compatible” debate, since it drives most purchasing hesitation: the only reason a “compatible” 50ml cartridge leaks isn’t that it’s aftermarket; it’s a faulty outlet-to-mixer engagement, or a piston-to-wall gap with a tolerance wide enough for the components to bypass.
Those are precision molding and assembly variables, not a property of the brand written on the box. A cartridge made to precise dimensions, with a tight piston-to-wall fit and an engaged bayonet or bell-mouth outlet, seals identically to its “OEM” counterpart. That’s the trade-off worth understanding: you aren’t trading reliability for price, you’re buying precision either way.
We won’t claim an Ebestron cartridge is ‘better than’ a named brand, that’s marketing, not engineering. We’re going to say that it’s designed not to fail and the modes of failure are predictable. The mechanism patented (US Patent 8,875,947) to support the piston from tilting using guide elements has been followed by our piston tooling and the port has been sized to work with the mixer we’re shipping and there are no interface gaps in there that can be sealed against.
What actually drives fit & seal
How Ebestron controls it
Outlet interface match (bayonet / bell-mouth)
Outlet molded to the static mixer shipped with the cartridge — qualified as a set
Piston-to-wall seal under pressure
Piston molded to its own barrel cavity; guide geometry resists tilt
Barrel geometry consistency lot-to-lot
Controlled injection molding from one cavity standard per SKU
Ratio accuracy at the bead
Ratio fixed by barrel + piston geometry, enforced by static mixer
Dispenser compatibility
Runs on standard 50ml A- and S-system guns already on your line
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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50ml Dual-Cartridge Engineering & Selection Tools
50ml Dual-Cartridge Selector
Pick your adhesive chemistry — get the matching ratio, system, barrel, mixer & gun.
Access ToolStatic Mixer Waste & Savings Calculator
Estimate mixed-adhesive waste from your nozzle volume.
Calculate NowFAQ, 50ml Dual Cartridges
The ratio is simply the balance of volume in two barrels – Part A to Part B – engineered into the barrel and piston configuration. 1:1, 2:1, and 4:1 use the A-System (square back), which apply to most epoxy and polyurethane applications, whereas the 10:1 ratio is for the B/S-System (round back, grey cap) and is the standard for most methacrylate adhesives. A static mixer ensure proper ratio at the bead and consistent results for each application.
Yes, for standard 50ml application guns. A-System cartridges are for A-style, 50ml dispensers and are compatible with Mixpac DMA50 and equivalent systems. S-System, 10:1 cartridges are for S-system 50ml dispensers, compatible with Nordson EFD and equivalent units. It’s essential to ensure that the mixer-to-outlet interface matches the static mixer you intend to use (bayonet or bell-mouth) for optimal application.
The cartridge’s seal is equivalent to its quality of manufacture; leaks generally result from mismatched interfaces or excessive play in the piston, rather than being non-OEM. Precisely molded cartridges with pistons to specific dimensions and appropriately designed outlets will maintain a leak-proof seal. We advise testing a sample on your gun and with your adhesive formulation to your satisfaction, as is standard practice for any packaging buyer.
Select the appropriate barrel for your adhesive. PP is suitable for epoxy, polyurethane, and silicone adhesives. PA (nylon) barrels offer a barrier to minimize evaporation for acrylates, methacrylates, and MMAs, which require enhanced shelf life. The 10:1 S-system recommends PBT barrels for more challenging MMA applications and anaerobic adhesives that tend to be more aggressive. To assist you further, we can offer a recommendation based on your product’s SDS (Safety Data Sheet) if you provide it, which we’ll then verify with a sample aged on a PBT barrel for comparison.
Both, actually. You can purchase unfilled epoxy cartridges (and PA/PBT barrels) for your own filling operation, or, you can have us fill and seal the cartridges for you under your brand. Each cartridge will arrive equipped with corresponding pistons, a sealing cap, and a static mixer, ensuring a complete and synchronized dispensing system.
Both depend on your specific needs. You can buy empty epoxy cartridges (along with PBT and PA barrels) for your own line, or, if you want a ready-to-go solution, we fill and seal them under your private label. Customers can also opt for complete kits that include everything needed for clean dispensing. Order processing speed depends on whether you choose our standard neutral cartridges, which dispatch very quickly, or custom color, print, or private-label solutions, which need additional setup and tooling. Please send your target order quantity and desired specifications, and we’ll provide you with the relevant minimum order quantity (MOQ), lead times, and pricing.
