Hermetic connectors, which protect against both liquids and gases with a focus on preventing gas leakage, are widely used and highly functional. Let's explore the main factors causing hermetic failure in these connectors and how to mitigate them to build a strong performance barrier.
The "Three Major Culprits" of Hermetic Failure
01. Molecular-Level Gas Leakage
Incorrect Seal Material Selection: Environmental gas molecules are smaller than the molecular chain gaps in the selected seal material, allowing them to pass through "unhindered."
Overlooking Material Temperature Resistance: For instance, permeability at 60°C can be several times higher than at 25°C. Therefore, permeability under high-temperature conditions must be a key evaluation factor.
Insufficient Seal Thickness: Generally, if the seal thickness is too small, the permeation rate increases exponentially.
02. Micro-Leakage at Interfaces
Manufacturing Process Limitations: Micro-deviations in connector component dimensions due to machine tool accuracy; dimensional fluctuations caused by tool wear.
Improper Assembly Stress: Deviations in parameters like screw tightening torque can lead to insufficient compression of seals, significantly reducing sealing effectiveness.
Thermal Expansion Mismatch: Excessive gaps formed due to differing thermal expansion coefficients between the housing, insulator, and seals under high temperatures.
03. Extreme Environmental Stress
Extreme High/Low Temperatures: Extreme cold can easily cause rubber to become brittle and crack; extreme heat can lead to rubber decomposition or softening.
Corrosive Factors: Prolonged contact with substances like corrosive gases can cause seal swelling or corrosive perforation.
The LP20 Hermetic Connector: A Justified Choice for Hermeticity
Developed based on the mature LP series architecture, the LP20 connector passes a rigorous 500KPa hermetic test (zero leakage). Its exceptional sealing performance stems from the following core technical assurances:
1. Highly Elastic Seal Material
Uses custom seals made from high-performance silicone rubber, offering excellent elasticity and sealing properties.
2. Temperature-Adaptive Seals
An operating temperature range of -40°C to +120°C ensures stable permeability even under extreme temperatures.
3. Reinforced Seal Structure
Features a 2.0mm thick seal design, enhancing gas barrier capability.
4. Multi-Layer Sealing Enhancement
Employs a combination of copper pins with seals, integrated module sidewall seals, and multi-layer conformal coating, elevating hermetic performance.
5. Precision Manufacturing Process
Key components are produced via precision machining and injection molding, ensuring dimensional accuracy and surface quality meet standards.
6. Controlled Assembly Process
Utilizes a coordinated equipment and manual assembly process combined with full-batch seal testing to guarantee assembly consistency.
7. Environmental Durability
Wide temperature range compatibility (-40°C to +120°C).
Strong corrosion resistance (Salt spray test ≥72 hours).
The LP20 Hermetic Connector: Outstanding Advantages, Comprehensive Performance
01. An All-Round Waterproof Solution, High-Performance in Both Mated and Unmated States
The LP20 Hermetic Connector achieves more comprehensive waterproof and hermetic performance through measures like adding waterproof seals between modules, using sealed copper pins, and multi-layer conformal coating. It achieves flagship-level IP68/IPX9K protection ratings in both the mated and unmated states.
02. Handles Harsh Environments with Ease, Electrical Transmission Remains Rock-Solid
Wide-Temperature Operation: Fully compatible from -40°C to +120°C.
UV Resistance: f1-rated engineering plastic housing resists UV aging.
Strong Corrosion Resistance: Salt spray test ≥72 hours, suitable for high-salinity environments.
03. Snap-Fit Direct Plug-In Connection for Ultimate Simplicity and Speed
Incorporates a snap-fit direct plug-in connection structure design, allowing for quick, one-handed mating and unmating. Ideal for high-frequency plugging/unplugging applications, making operations faster, more efficient, and simpler.
In summary, if you are searching for a high-performance hermetic connector, the CNLINKO LP20 Hermetic Connector is certainly worth considering.