Key Technical Specifications
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- Primary Application: CMOS filter replacement, Face ID module fixing, and FPC (Flexible Printed Circuit) flex cable reinforcement.
- Viscosity: Diluted and low-viscosity consistency, which allows the glue to easily penetrate tight gaps and prevents accidental overflow onto sensitive lenses.
- Optical Clarity: High optical transparency that cures completely clear, ensuring no distortion, light blockages, or image blur for phone cameras.
- Curing Mechanism: Requires an ultraviolet (UV) curing light source to harden. It remains completely workable and won’t dry out prematurely until it is exposed to UV light.
Common Use Cases
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- CMOS Filter Fixing: Locks replacement glass filters directly over the phone’s camera image sensor.
- Face ID Module Repair: Re-aligns and safely locks structural elements like the dot projector, infrared camera, or flood illuminator back into position.
- Flex Cable Reinforcement: Bonds fragile FPC component joints to the logic board frame to prevent shifting or lifting during reassembly.
The Mechanic Camera Repair Series
The C91 is part of a specialized 3-piece adhesive kit from MECHANIC often used on modern smartphone cameras (such as iPhones):
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- C89 (Anti-Shake Glue): A medium-viscosity, air-dry glue used to fill optical image stabilization (OIS) holes to fix shaking or motorized lens parts.
- C90-UV (Blu-Ray/Blue Light Glue): A thicker UV-curable glue used for outer encapsulation and strengthening during blue-ray camera replacement.
- C91-UV (Filter Glue): The thinnest, most diluted liquid formula optimized for delicate internal filters.





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