Description
Adhesive that cures inside the mixing nozzle is money in the trash. Every purge, every stop in the run, and every nozzle you pull off the cartridge takes retained adhesive with it. On expensive epoxies and thermally conductive pastes it adds up fast.
The Xemex X2-C8-7L Low-Waste Static Mixer holds 3.0 mL of retained volume and replaces 18 to 24 element mixers using only seven Xemex elements. The 8.7 mm inner diameter handles mid to high viscosity materials without choking flow.
The luer-lock outlet threads on and locks needles and precision tips for controlled bead placement. The standard 16.7 mm bell connection drops onto most dual-cartridge and meter-mix systems, so it’s a direct swap without changing dispensing equipment.
The hydrophobic polyester insert supports moisture-sensitive formulations. Compatible with epoxies, methacrylates (MMA), urethanes, and silicones. Designed and manufactured in the United States.
Also sold as X2-B8-7L. Re Mixers renamed the bell connection from B-System to C-System. Same mixer, current part number is X2-C8-7L.
See How Xemex Low-Waste Mixers Work
The Xemex element geometry completes mixing in fewer elements, which shortens the mixer and cuts the amount of adhesive trapped inside it.
Key Product Details
| Property | Value |
|---|---|
| Product | Xemex X2-C8-7L Static Mixer |
| Manufacturer Part Number | X2-C8-7L |
| Legacy Part Number | X2-B8-7L |
| Connection Style | C-System (Bell, 16.7 mm) |
| Outlet Tip | Luer-Lock |
| Insert Material | Polyester (PETG), yellow, hydrophobic |
| Housing Material | Polypropylene |
| Mixing Elements | 7 |
| Replaces | 18 to 24 element mixers |
| Inner Diameter | 8.7 mm (0.34 in) |
| Total Length | 90 mm (3.54 in) |
| Retained Volume | 3.0 mL |
| Compatible Mix Ratios | 1:1, 2:1, 4:1, 10:1 |
| Dispensing Systems | Dual-cartridge and meter-mix |
| Adhesives Served | Epoxies, Methacrylates, Urethanes, Silicones |
| Country of Origin | United States |
Patented Xemex Mixing Technology
Each Xemex element multiplies the striation count, so full mixing happens in seven elements instead of 18 to 24. Shorter mixer, same mix quality, less adhesive left inside when you are done.
Performance in Production
- 3.0 mL retained volume in a mixer that replaces 18 to 24 element designs.
- 8.7 mm inner diameter supports higher-flow work and mid to high viscosity materials.
- Lower back pressure than comparable micromixers, which means less operator effort on manual guns.
- Luer-lock outlet locks on needles and precision tips instead of relying on a friction fit.
- Hydrophobic polyester insert supports moisture-sensitive adhesive systems.
- Standard bell connection fits existing cartridge and meter-mix hardware with no equipment change.
Installation and Handling
- Fits standard 16.7 mm bell cartridge and meter-mix connections.
- Purge a short bead before the first shot to confirm both sides are flowing.
- Replace the mixer once adhesive begins curing inside the nozzle.
- Leave the spent mixer on the cartridge between runs to seal it, then fit a fresh one for the next job.
Common Applications
- Electronics. Potting and encapsulation where complete mixing prevents soft spots, including wearables and medical device assembly.
- Transportation and aerospace. Structural bonding on production and repair work.
- Industrial manufacturing. Gasketing and sealing with precision bead control.
- Robotic and meter-mix adhesive dispensing cells
Waste and Back Pressure Comparison
Traditional helical and square-element mixers can trap more than twice the adhesive volume of a Xemex mixer. That difference repeats on every cartridge, every purge, and every changeover, and it shows up in clean-up time too.
Fabricators and manufacturers commonly move to the X2-C8-7L from these Medmix mixers. The chart shows measured waste volume and back pressure for each.
- MCQ Series. 05-24L, 08-24T, 08-32T
- MCH Series. 05-18T, 05-24T, 05-32T, 06-24T, 08-18T, 08-24T, 08-32T
C-System Options
Four C-system mixers share the same 16.7 mm bell connection and 8.7 mm inner diameter. Pick element count first, then tip.
| Part | Elements | Outlet | Retained Volume | Best For |
|---|---|---|---|---|
| X2-C8-7L (this page) | 7 | Luer-Lock | 3.0 mL | Lower waste, needles and precision tips locked on |
| X2-C8-7S | 7 | Stepped | CONFIRM | Lower waste, direct bead work |
| X2-C8-8L | 8 | Luer-Lock | 3.5 mL | Extra mixing margin, needles and precision tips |
| X2-C8-8S | 8 | Stepped | 3.4 mL | Extra mixing margin, direct bead work |
Seven elements or eight comes down to the material. Seven holds roughly half a milliliter less, which adds up on high-cost adhesives run at volume. Eight buys mixing margin worth more than the half milliliter on harder-to-mix or high-ratio formulations. Luer-lock or stepped comes down to whether you are running needle tips or laying a bead.
Xemex Mixer Comparison
Match the mixer to the cartridge or meter-mix hardware you already run, then pick the tip. Retained volume is what you lose in the nozzle on every purge and every changeover.
| Model | Connection | Outlet | Inner Diameter | Elements | Retained Volume |
|---|---|---|---|---|---|
| X2-A5-7L | A-Style (Bayonet) | Luer-Lock | 5.3 mm | 7 | 0.6 mL |
| X2-A5-7T | A-Style (Bayonet) | Luer-Slip | 5.3 mm | 7 | 0.6 mL |
| X2-C8-7L | C-Style (Bell) | Luer-Lock | 8.7 mm | 7 | 3.0 mL |
| X2-C8-7S | C-Style (Bell) | Stepped | 8.7 mm | 7 | 2.5 mL |
| X2-C8-8L | C-Style (Bell) | Luer-Lock | 8.7 mm | 8 | 4.3 mL |
| X2-C8-8S | C-Style (Bell) | Stepped | 8.7 mm | 8 | 4.3 mL |
| X2-G8-7S | G-Style (Threaded) | Stepped | 8.7 mm | 7 | 2.9 mL |
| X2-F8-8S | F-Style (1:1, 2:1) | Stepped | 8.7 mm | 8 | 5.2 mL |
| X2-FZ8-8S | F-Style (4:1, 10:1) | Stepped | 10.7 mm | 8 | 5.0 mL |
Browse the full Xemex low-waste mixer line
Frequently Asked Questions
Is the X2-B8-7L the same as the X2-C8-7L?
Yes. Re Mixers renamed the bell connection from B-System to C-System, so the same mixer now ships as X2-C8-7L. If you have older quotes, drawings, or purchase orders calling out X2-B8-7L, this is the part.
Which C-system Xemex mixer should I use?
Four options share the same 16.7 mm bell connection and 8.7 mm inner diameter. Element count sets the mixing margin and the waste, and the tip sets how you dispense. The 7-element versions hold about half a milliliter less than the 8-element versions. Choose a luer-lock tip when you are running needles or precision tips, a stepped tip when you are laying a bead directly. The C8-7L is 7-element luer-lock at 3.0 mL, the C8-7S is 7-element stepped, the C8-8L is 8-element luer-lock at 3.5 mL, and the C8-8S is 8-element stepped at 3.4 mL.
Which Medmix mixers does the X2-C8-7L replace?
It is commonly used in place of Medmix MCQ 05-24L, 08-24T, and 08-32T, and MCH 05-18T, 05-24T, 05-32T, 06-24T, 08-18T, 08-24T, and 08-32T. Confirm the connection and ratio against your cartridge before switching.
Will the X2-C8-7L fit my cartridge?
It fits standard 16.7 mm bell connections on dual-cartridge and meter-mix systems. If your hardware uses a bayonet, threaded, or F-style outlet instead, use the matching Xemex connection style from the comparison table above.
Customer Feedback
“Xemex cured our mixing issues and reduced waste significantly. It worked better than the 48-element mixer we previously used.”
Electronics Manufacturer
“Customers using Dow 3-4207 saw better mixing and lower adhesive loss with Xemex.”
Adhesive Applications Specialist
“Xemex delivered perfect results with thermal paste and saved on every cartridge. They switched immediately.”
Distributor, Southern US
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