PPG Semco® Model 285-A Semkit® Package Mixer Timer — Semi-Automatic Mixing with Built-In Bell Timer | 115 VAC
Mix with precision and ease — every time. Semi-automatic performance engineered to deliver consistent, uniform results while reducing operator fatigue.
The PPG Semco® Model 285-A Semkit® Package Mixer Timer combines mechanical precision with user-friendly semi-automatic operation — delivering consistently uniform material blending, a built-in bell timer for cycle-perfect mixing, and a lightweight portable design that fits seamlessly into any professional workspace.
⚠️ Safety Notice: Always follow applicable safety protocols and manufacturer guidelines when operating mixing equipment. Ensure power supply compatibility before use. Do not exceed recommended mixing cycle parameters.
At a Glance
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Semi-Auto
Mixing Operation
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Technical Specifications
| Specification |
Detail |
| Brand |
PPG – Semco® |
| Model |
285-A Semkit® Package Mixer Timer |
| Operation Type |
Semi-Automatic |
| Power Supply |
115 VAC Standard |
| Mixing Mechanism |
Drive Spindle + Rotating Dasher via Vertical Stroke |
| Cycle Indicator |
Built-In Bell Timer |
| Portability |
Lightweight, Portable Design |
| Compatible With |
Semco® Semkit® Cartridge Packages |
How It Works
⬇️
Step 1
Stroke the Cartridge
Operator strokes the Semkit® cartridge vertically — the drive spindle engages and begins rotating the mixing rod automatically
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🔄
Step 2
Rotating Dasher Blends
The rotating dasher thoroughly blends materials throughout the cartridge — ensuring a consistent, uniform mix with every stroke cycle
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🔔
Step 3
Bell Timer Alerts
The built-in bell timer sounds precisely when the mixing cycle is complete — no guesswork, no over-mixing, no under-mixing
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Key Features & Benefits
🔄 Semi-Automatic Precision Mixing
The drive spindle automatically rotates the mixing rod with each vertical stroke — combining mechanical efficiency with operator control for consistently uniform material blending that manual mixing simply cannot match.
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🔔 Built-In Bell Timer
The integrated bell timer alerts the operator precisely when the mixing cycle is complete — eliminating guesswork, preventing over-mixing or under-mixing, and ensuring every batch meets your exact material specifications.
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💪 Reduced Operator Fatigue
Semi-automatic operation significantly reduces the physical effort required for thorough material blending — minimizing operator fatigue during high-volume or repetitive mixing operations without sacrificing mix quality.
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🔌 Standard 115 VAC Power
Runs on standard 115 VAC power — no special electrical infrastructure required. Simply plug in and operate from any standard workshop, production floor, or field service outlet.
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🧳 Lightweight & Portable
Compact, lightweight design fits seamlessly into any workspace — from high-volume production floors to MRO facilities and field service operations — without requiring dedicated equipment space or fixed installation.
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🎯 Consistent, Uniform Results
The rotating dasher's engineered blend action ensures thorough, homogeneous material mixing — delivering optimal sealant or adhesive consistency for reliable application performance and quality-compliant results every time.
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Why Semi-Automatic Mixing Matters
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Manual Mixing Risks
Inconsistent blend quality, operator fatigue, variable cycle times, and unreliable material ratios — leading to poor application performance and potential rework
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Without a Timer
Over-mixing degrades material properties. Under-mixing results in incomplete cure, adhesion failures, and non-conforming sealant performance in critical applications
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Model 285-A Solution
Semi-automatic rotation + bell timer = consistent blend quality, precise cycle control, and reduced fatigue — every batch, every time
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Aerospace Assembly Sealant Mixing & Application Two-Part Adhesive Preparation MRO Operations Manufacturing Assembly Production Floor Operations Field Service & Maintenance Quality-Critical Material Blending
Complete Your Workflow
⚠️ Required Components
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Semco® Semkit® Cartridge Package
Pre-measured two-part material package designed for use with the Model 285-A mixing system
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115 VAC Power Outlet
Standard wall outlet required — no special electrical infrastructure needed
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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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Dispensing Nozzles
Precision nozzles for targeted material delivery — available in multiple tip configurations
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Application Tools
Spatulas, brushes, and finishing tools for professional material application and surface preparation
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Quality You Can Count On
🎯
Consistent Uniform Blending
Rotating dasher delivers thorough, homogeneous material mixing — every batch, every time
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🔔
Cycle-Perfect Timing
Built-in bell timer eliminates guesswork — no over-mixing, no under-mixing, no material waste
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💪
Reduced Operator Fatigue
Semi-automatic operation reduces physical effort — sustaining productivity across high-volume operations
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🧳
Portable Workplace Versatility
Lightweight design fits any workspace — production floor, MRO facility, or field service operation
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Tips for Best Results
✓ Confirm your Semkit® cartridge package is properly seated before beginning the mixing cycle
✓ Always allow the bell timer to complete its full cycle — do not stop mixing early to ensure complete material homogeneity
✓ Maintain a consistent vertical stroke rhythm for optimal dasher rotation and uniform blend quality
✓ Verify power supply is 115 VAC before plugging in — do not use with incompatible voltage sources
✓ Dispense mixed material promptly after the timer sounds — follow material manufacturer's pot life guidelines to ensure optimal application performance
PPG Semco® Model 285-A Semkit® Mixer Timer — Your partner in professional mixing precision, consistency, and productivity.
Compatible with Semco® Semkit® cartridge packages. Runs on standard 115 VAC power.
⚠️ 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.
⚠️ Usage Notice: The Semco® Model 285-A Portable Mixer is specialized electric mixing equipment designed for manual mixing of Semkit® cartridge packages. Operator training is recommended before use. This equipment is designed for mixing of two-part sealants, adhesives, and compounds in Semkit® cartridge packages only — do not use for other applications without proper evaluation and approval. Verify bell timer functionality before each use — do not operate if timer is non-functional. Ensure compressed air supply is clean and dry before connection — contaminated or wet air can damage the pneumatic mechanism and compromise mix quality. Maintain recommended operating RPM range (135-145 RPM) for optimal mixing performance and dasher rotation. Inspect all pneumatic hoses, connections, and components for damage, leaks, or wear before each use — replace damaged components immediately. Never exceed maximum recommended operating parameters. Always follow manufacturer guidelines, safety protocols, industry standards, and applicable regulations for your specific application and environment. Improper operation can result in serious injury, equipment damage, or material loss. Specifications subject to change without notice.
Trademark Notice: Semco® and Semkit® are registered trademarks of PRC-DeSoto International Inc. and PPG Industries, registered with the U.S. Patent Office. PPG-SEMCO® is a registered trademark of PPG Industries.