Hermetic connectors are a category designed to protect against both liquids and gases, with a primary focus on preventing gas leakage. So, what are their sealing types? And what qualities should a versatile, all-around hermetic connector possess?
What are the Common Sealing Types for Hermetic Connectors?
01. Glass/Ceramic Sintered Sealing
This method forms a hermetic sintered seal and permanent fusion between the pin and the housing using molten glass or ceramic powder at high temperatures. Its main characteristics are:
Superior Hermeticity: Offers higher sealing performance and an extremely low leakage rate.
High Weather Resistance and Strength: Resistant to high/low temperatures, corrosion, and aging; capable of withstanding air pressure and physical impact.
Non-Dismantlable: If the hermetic seal is compromised, the entire unit must be replaced.
Applications: Typically used in fields demanding extreme reliability, such as deep-sea equipment and high-end medical devices.
02. Elastic Sealing Ring Sealing
This type utilizes elastic sealing rings, gaskets, or composite sealing structures made of materials like silicone or rubber. Sealing is achieved by the elastic deformation caused when connector components are pressed together. Its main characteristics are:
Multiple Seal Points: Sealing rings are usually installed at the plug-socket mating interface and cable outlet, etc.
Maintainable: The sealing rings are replaceable, facilitating easier maintenance.
Moderate Cost: This is currently the most mainstream and widely used technology for hermetic connectors.
Applications: The vast majority of industrial equipment, outdoor LEDs, smart landing pads, etc.
03. Potting/Encapsulation Sealing
Internal components like cables and terminals are potted or encapsulated with materials like injection-molded plastic or epoxy resin, forming an integrated sealed structure. Its main characteristics are:
Sealing Focus: Primarily addresses sealing from the connector rear to the cable.
High Integrity: Provides excellent strain relief and mechanical protection.
Non-Dismantlable: Once cured, it cannot be maintained.
Applications: Mainly used as an independent sealing solution for sensors, power modules, etc.
The LP20 Hermetic Connector: Versatile, and Therefore a Favorite
The LP20 Hermetic Connector is the first hermetic connector developed by CNLINKO. It boasts excellent hermetic performance, passing a 500KPa hermetic test with zero leakage, and falls under the elastic sealing ring category. Naturally, besides its outstanding hermetic performance, its overall capabilities are very comprehensive.
01. High-Performance Waterproofing, IP68/IPX9K Even Unmated
The LP20 Hermetic Connector employs a combination of sealed copper pins, integrated module sidewall seals, and a multi-layer conformal coating process. This not only provides excellent hermeticity but also delivers flagship-level, versatile waterproof configuration. It achieves IP68/IPX9K protection ratings in both the mated state and the unmated state.
02. Premium SABIC Engineering Plastic for Safer, Assured Flame Retardancy
The main housing of this CNLINKO hermetic connector uses carefully selected SABIC brand engineering plastic, offering higher overall performance and strength. It meets the UL94 V-0 flame retardancy standard, providing superior fire suppression and enhanced safety performance.
03. Confronts Harsh Environments, Performance Remains Stable
Temperature Resistance: Adapts to a wide temperature range of -25°C to +120°C.
UV Resistance: f1-rated engineering plastic housing can directly withstand outdoor UV degradation.
Corrosion & Chemical Resistance: Salt spray test duration ≥72 hours, suitable for corrosive environments.
04. One-Handed Operation, Embodying Speed & Simplicity
This connector features a snap-fit direct plug-in connection design, allowing users to mate and unmate it with one hand. It meets the need for quick disconnection, making it an optimal solution for applications involving frequent plugging/unplugging or requiring rapid disconnection.
If you are looking for a high-performance, versatile hermetic connector, this LP20 Hermetic Connector is an excellent choice.