✦ 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

100%

Dispenser
Compatible

Zero

Cross
Contamination

OEM

Bulk Supply
Ready

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Product Name

Ebestron 50ml dual cartridge

Components

Side-by-side cartridge & matched parts

Mix Ratios

1:1 · 2:1 · 4:1 · 10:1

Materials

PP · PA · PBT

Volume

50 ml (twin)

Compatibility

Mixpac® / Nordson®

Supply

OEM, Private label & bulk

Included

Cap · Piston · Mixer

Barrel Material Selection: Matching PP, PA & PBT to Your Adhesive Chemistry

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. Every one of the three polymers we offer molds to a unique chemistry.

If you stick to the commonly held, “standard rule” of polypropylene for “all epoxies, urethanes and silicones,” while using nylon to accommodate those “acrylic or methyl methacrylate adhesives and sealants whose volatile content needs the special barrier performance of Nylon to ensure long shelf life” – your barrel material gets the job done and the ratio can follow. You can extend your shelf life from one to five years with either two-part adhesives when you properly select a barrel to the component Chemistry inside, not the other way around.

PP (polypropylene)

Best-fit chemistry Epoxy, polyurethane, two-part silicone

Why Good barrier + dimensional stability; long shelf life for these systems

Watch-out Not ideal for high-volatile MMA

PA (polyamide / nylon)

Best-fit chemistry Acrylics, methacrylate (MMA)

Why Barrier properties hold volatile content that would migrate through PP

Watch-out Moisture-sensitive; control storage humidity

PBT

Best-fit chemistry MMA, anaerobic (10:1 S-system)

Why Chemical resistance + rigidity for aggressive monomers

Watch-out Matched to round-back / gray-cap geometry

Buyer advisory, qualify the material, not just the ratio

If you’re dispensing a system composed of any form of methyl methacrylates or acrylates, insist on a PA or PBT barrel (even if the PP fits). You can fill an MMA system in a PP barrel, it will pass an initial inspection and yet fail in service during routine storage of some of its’ formulation ingredients will slowly permeate until they degrade the Seal integrity. It will show up as a field complaint – not a line reject. Ebestron will recommend the barrel on your specific resin safety data sheet (SDS), then prove it using an actual aging sample.

This matters most for buyers with a diversified product line. You might run an acrylic or MMA line alongside an epoxy line, different actives that need different barrels, but only one static mixer nozzle standard. Simplifying your consumables is the real win here: no more stocking three different mixer sizes.

A concrete example

“An electronics potting line that switched its acrylic from a PP barrel to a PA barrel stopped seeing the minor but persistent viscosity drift that had been failing its 12-month retain samples. No change in composition, same dosage, same fill, same 1:1 ratio, only the barrel material changed. Cartridge barrier-material construction for two-component systems is described in U.S. Patent 4,279,340, and packaging-material selection is covered by the Adhesives & Sealants Industry reference.”

Send us your resin SDS and we’ll spec the barrel.

Request a material recommendation →

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.

~75%

less mixed-adhesive waste per nozzle when a modern static-mixer geometry replaces a conventional helical mixer — roughly 14,100 mL of adhesive recovered per 1,000 nozzles per year.

Source: industry analysis, Adhesives & Sealants Industry (adhesivesmag.com). Figures are industry data, not Ebestron test results.

“

“Every 50ml barrel we also size to 1 cavity standard and the piston seal on a batch is then pressure tested. Only when the piston resists back pressure then it is given a part number – the part number that saves a customer’s line from a bad mess.”

Ebestron Engineering Team, Cartridge Tooling & QC

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

OEM, Private Label & Bulk Supply, Procurement Guide

Ebestron isn’t just a supplier, it’s a manufacturer – that the single supply component most distributors and catalogers can’t compete with. The 50 ml dual cartridge can be delivered as neutral/empty, custom colored/printed in your brand, or shipped filled with your product in a private label program.

No other supplier can offer the convenience for a formulator to collapse it all-whether it’s your 10:1 S-system dual barrel cartridge, your cap, your piston, and your mixer into one matched supply item. A mid-size MMA formulator that recently consolidated its barrels, caps, pistons, and mixers onto one Ebestron supply removed two purchase orders and one inbound-inspection step every month, a real total-cost saving the per-unit price never shows.

Building a supplier file? Request compliance documentation & a quote →

Price on a custom cartridge program is driven by a few levers rather than one list price, hence the fair answer to “what does it cost” is “it depends on these levers”:

Order volume Per-unit cost drops with quantity tiers; tooling amortizes over a run

Barrel material PP / PA / PBT differ in resin cost and molding cycle

Customization Custom color, print, or private-label adds setup; neutral stock is fastest

Component scope Cartridge only, or matched piston + cap + static mixer as a kit

Compliance documentation RoHS / REACH material declarations and lot certificates on request

Buyer advisory, qualify a supplier the way an auditor would

A defensible supplier decision weighs defect rate per shipment, lot-to-lot variation, certification status and lead time, not just cost per unit. Industry guidance is clear on this point: buyers pick the wrong packaging by self-researching a catalogue instead of consulting a specialist, then regret the wrong barrel at volume. Ask any cartridge supplier for a sample lot, a material declaration and a dimensional record before you contract, Ebestron provides all three, and we strongly encourage a sample run on your own equipment first.

On compliance we are precise rather than decorative: Ebestron offers RoHS- and REACH-compliant material options, operates an ISO 9001-aligned quality process, and issues material and lot documentation on request. We do not apply certification marks we cannot substantiate, if your customer requires a specific certificate, ask and we will provide the current copy.

RoHS Compliant material option

REACH Compliant material option

ISO 9001 Aligned QC process

Lot QC Dimensional + seal record

OEM Custom / private label

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.

Why We Publish This Compatibility Data

We, at Ebestron, design and mold the component hardware for your two-component cartridges, including barrels, pistons, caps, and static mixers. Our customers’ inquiries typically focus on compatibility with existing equipment, optimal barrel material selection, and the effectiveness of the cartridge’s sealing mechanism-not on adhesive formulations, as that is the purview of adhesive manufacturers, not component suppliers like us.

Our system mappings and barrel material recommendations on this page come from our own tooling and quality-control data, combined with published packaging standards. Where industry data is referenced instead of our measurements, it is noted on the relevant section. If a specification appears incorrect for your intended use, please inform us with details about the material you intend to dispense, and we will revise the suggestion after assessing a sample.

50ml Dual Cartridges