PPG Semco® Model 285-B Battery-Powered Semkit® Mixer — 20V Lithium-Ion | Cordless Portable Operation
No cord. No air hose. No compromise. Professional-grade mixing precision — wherever your work takes you.
The PPG Semco® Model 285-B is a heavy-duty, battery-powered mixer engineered for the precise mixing of sealants, adhesives, potting compounds, and other materials packaged in Semco® cartridges or Semkit® packages — delivering the convenience of a lightweight, cordless, portable solution without sacrificing the consistent, uniform mix quality demanded by professional aerospace and industrial applications.
🦺 Safety Requirements: WEAR SAFETY GLASSES AND GLOVES WHILE MIXING AND DISPENSING. Always refer to the manufacturer's Safety Data Sheet (SDS) before handling Semkit® materials. Verify selector switch is in the "OFF" position before loading or unloading cartridges.
At a Glance
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CORDLESS
No Cord / No Hose
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US/UK/EU/AU
Charger Plugs
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Technical Specifications
| Specification |
Detail |
| Brand |
PPG – Semco® |
| Model |
285-B Battery-Powered Semkit® Mixer |
| Operation Type |
Semi-Automatic — Battery-Powered Cordless |
| Power Source |
20V Lithium-Ion Battery (Included) |
| Charger |
Charger Base & Cord Included — US, UK, EU, AU Plug Options Available |
| Unit Weight |
Approximately 8 lb |
| Motor |
High-Torque, Heavy-Duty Industrial Construction |
| Mixing Mechanism |
Spindle Assembly + Rotating Dasher Rod via Vertical Stroke |
| Timer |
Built-In — Auto-Stop at Cycle Completion |
| Handle |
Side Handle for Ergonomic One-Hand Operation |
| Compatible With |
Semco® Cartridges & All Filled Semkit® Packages |
What's Included
🔋
20V Li-Ion Battery
High-capacity lithium-ion battery for extended cordless operation
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🔌
Charger Base & Cord
Compatible with US, UK, EU, and AU electrical outlets worldwide
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⚙️
Spindle Assembly
Drive spindle and dasher rod assembly for Semkit® cartridge engagement
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🤝
Side Handle
Ergonomic side handle for secure, comfortable two-hand operation
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Choosing the Right Semkit® Mixer
Model 285-A
Semi-Auto / Corded
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→115 VAC power required |
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→Bell timer cycle alert |
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→Fixed workstation use |
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Model 285-B ← You Are Here
Semi-Auto / Cordless Battery
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→20V Li-Ion — no cord or hose |
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→Auto-stop timer built-in |
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→Fully portable — anywhere |
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Model 388
Fully Automated / 115V + 90 PSI
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→Fully automated operation |
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→115 VAC + 90 PSI air supply |
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→High-volume production lines |
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Key Features & Benefits
🔋 20V Lithium-Ion Cordless Freedom
The 20V lithium-ion battery eliminates the need for an electric cord or air hose — delivering true portability for production floors, MRO facilities, field service operations, and any location where power access is limited or restricted.
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⚡ High-Torque Industrial Motor
The heavy-duty, high-torque motor is built to withstand the rigors of continuous industrial use — delivering consistent spindle rotation speed for thorough, uniform material blending across sealants, adhesives, and potting compounds.
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⏱️ Auto-Stop Timer
The built-in timer automatically stops the mixer when the mixing cycle is complete — eliminating guesswork, preventing over-mixing or under-mixing, and ensuring every batch meets your exact material specifications without operator intervention.
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🎯 Consistent Kit-to-Kit Mix Quality
The spindle-driven rotating dasher delivers consistent, uniform blending from kit to kit — eliminating the quality variability of non-approved manual mixing methods and ensuring compliant material performance across every application.
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🧳 Lightweight & Ergonomic Design
At approximately 8 lb with a built-in side handle, the 285-B is engineered for comfortable, fatigue-reducing one-hand operation — making it ideal for extended use in confined spaces, elevated work areas, and mobile field applications.
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🌍 Global Charger Compatibility
Charger cords are readily available with plugs to fit US, UK, EU, and AU electrical outlets — making the 285-B a truly global solution for international aerospace and industrial operations worldwide.
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Step-by-Step Mixing Instructions
⚠️ Before You Begin: Refer to the manufacturer's Safety Data Sheet (SDS) for handling the Semkit® before mixing. WEAR SAFETY GLASSES AND GLOVES WHILE MIXING AND DISPENSING.
| Step |
Instruction |
| 1 |
Prepare the Semkit® according to the instructions accompanying the kit |
| 2 |
Verify the selector switch is in the "OFF" position before proceeding |
| 3 |
Using the spindle assembly, engage the dasher rod holes with the drive pins |
| 4 |
Hold the cartridge firmly with one hand throughout steps 5–10 |
| 5 |
Set the timer according to the Semkit® instructions for your specific material |
| 6 |
Grip the side handle with your other hand and place the selector switch to "ON" using your thumb |
| 7 |
Mix by slowly moving the cartridge up and down along the full length of the dasher rod — each stroke should extend from the neck to the plunger end of the cartridge |
| 8 |
Mixing is complete when the timer ends and the mixer automatically stops
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| 9 |
On the last stroke, push the dasher rod into the cartridge and up against the plunger |
| 10 |
Place the selector switch to "OFF" and remove the dasher rod from the drive pins |
| ✓ |
Material is now ready for dispensing — proceed promptly within the material's pot life window |
Maintenance & Care
✓ After each use: Wipe all contaminants clean with an approved cleaning agent and dampened rag — preventing material buildup that can affect mixing performance
✓ Regularly inspect: Ensure all bolts in the spindle assembly are tight — loose components can affect dasher rod engagement and mix quality
✓ Battery care: Return battery to charger base after each use to ensure the unit is ready for the next operation — do not store in a fully discharged state
✓ Worn parts: Replace all worn or damaged components as necessary — contact PPG Aerospace Application Support for genuine replacement parts
Aerospace Assembly Sealant Mixing Adhesive Preparation Potting Compound Mixing MRO & Field Maintenance Remote & Restricted-Access Work Areas International Operations Quality-Critical Material Blending
Complete Your Workflow
⚠️ Required Components
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Semco® Cartridges or Semkit® Packages
Filled material packages compatible with the 285-B spindle assembly
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Charged 20V Li-Ion Battery
Included — ensure battery is fully charged before beginning mixing operations
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⭐ Recommended Accessories
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Dispensing Guns
Pneumatic or manual guns for precise, controlled material application after mixing
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Precision Nozzles
Targeted material delivery nozzles in multiple tip configurations for specific applications
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Professional Application Tools
Spatulas, brushes, and finishing tools for professional material application
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Quality You Can Count On
🔋
True Cordless Portability
20V Li-Ion battery — no cord, no hose, no limitations on where you work
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🎯
Kit-to-Kit Consistency
Spindle-driven dasher eliminates variability — uniform blend quality every time
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⚡
High-Torque Industrial Motor
Heavy-duty construction engineered for the rigors of continuous industrial use
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🌍
Global Charger Compatibility
US, UK, EU, and AU plug options — ready for international operations worldwide
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PPG Semco® Model 285-B — Professional-grade cordless mixing precision, wherever your work takes you.
Includes 20V Li-Ion battery, charger base & cord. Compatible with Semco® cartridges and all filled Semkit® packages.
⚠️ Safety & Compliance Notice: Always follow applicable safety protocols and manufacturer guidelines when operating mixing equipment. Wear safety glasses and gloves while mixing and dispensing. Refer to the manufacturer's Safety Data Sheet (SDS) before handling Semkit® materials.
Legal Notice: All recommendations, statements, and technical data contained herein are based on tests believed to be reliable and correct, but accuracy and completeness are not guaranteed and are not to be construed as a warranty, either expressed or implied. User shall rely on their own information and tests to determine suitability of the product for the intended use and assumes all risks and liability resulting from use of the product. Seller's and manufacturer's sole responsibility shall be to replace that portion of the product which proves to be defective. Neither seller nor manufacturer shall be liable to the buyer or any third person for any injury, loss, or damage directly or indirectly resulting from use of, or inability to use, the product.
Semco® and Semkit® are registered trademarks of PRC-DeSoto International Inc., registered with the U.S. Patent Office. Specifications subject to change without notice.
