Observed failure
Describe where liquid appears, when it occurs, product orientation and whether it is leakage, spitback or condensation.
Core Technologies / Leak-Resistance
Leak Resistance & Sealing
Control seals, pressure, part fit and transport conditions together.
02
Changhan Technology
Failure Analysis
Find the Leak Source
Check filling, seals, pressure, condensation, airflow and assembly before changing parts.
Product and liquid condition
Provide the exact structure, liquid viscosity, fill level, storage history and affected sample quantity.
Transport and use scenario
State temperature, pressure, vibration, charging, draw pattern and elapsed time before the issue.
Possible Leakage Paths
Reservoir interfaces
Fill ports, plugs, welds, tank joints and cartridge seams require compatible dimensions and materials.
Seal compression
Seal geometry, hardness, compression and assembly position must remain within a controlled tolerance.
Pressure management
Air expansion, liquid consumption and transport pressure can move liquid through unintended paths.
Air-path separation
Condensate collection and separation from electrical or external surfaces reduce false leakage and contamination.
Recreate and Verify
Leak Tests
Repeat the reported condition and confirm that the fix does not create a new issue.
Static storage
Check defined orientations, fill levels, durations and temperatures.
Pressure and transport
Review pressure change, vibration and packaged-product handling conditions.
Draw and condensation
Separate true seal leakage from aerosol condensation and air-path accumulation.
Assembly tolerance
Compare dimensions, seal placement and process variation across representative samples.
Engineering Output
A documented failure mode, corrective action and validation condition for the exact structure and liquid combination.
Related Capabilities
Related Options
Ceramic / Mesh Coil
Choose ceramic or mesh by liquid, airflow, power and draw.
Nicotine Salt & Flavor
Develop flavor, nicotine strength and VG/PG for the chosen device.
Power & Temperature
Match the battery, output, coil load and heat limits.
Smart Screen
Add battery, liquid, power and warning displays where the hardware supports them.
Start a B2B enquiry
Review Leak-Resistance
Send the device details, e-liquid, target result and test issue for an engineering review.