What are the common scenarios for thin-walled sealing rings?

Thin-walled sealing rings (with a cross-sectional diameter typically ranging from 0.4 to 0.9 millimeters) are widely used due to their small size and strong adaptability. They are particularly suitable for scenarios with strict requirements for space, precision, and sealing. Here are their common application areas and specific scenario analyses:

I. Precision Electronic Equipment

Smart Wearable Devices

Smart Watches/Hand Rings: Use fine-diameter sealing rings at the connection between the case and the strap, and around the buttons to prevent sweat and rain from seeping in and protecting the internal circuit boards.

Wireless Headphones: Use sealing rings at the contact area between the charging case and the headphones to ensure a waterproof rating of IPX4 or higher, and extend the service life.

Consumer Electronics

Mobile Phones/ Tablets: Use sealing rings at the SIM card slot, charging interface, volume keys, etc., to prevent dust and liquids from entering and improving the reliability of the device.

Camera Lenses: Use fine sealing rings at the connection between the lens and the body to prevent dust from entering and affecting the imaging quality, and to adapt to the small displacement during lens focusing.

Small Sensors

Pressure Sensors: Use sealing rings at the connection between the sensor housing and the circuit board to ensure that the measurement accuracy is not affected by environmental humidity.

Temperature Sensors: Seal the connection between the probe and the cable to prevent condensation water from causing short circuits.

II. Medical Devices

Endoscopes and Minimally Invasive Surgical Instruments

Endoscope Lenses: Use fine sealing rings at the connection between the lens and the catheter to prevent body fluids from seeping in, and to adapt to the dynamic sealing requirements during lens bending.

Surgical Instrument Handles: Seal the buttons, knobs, etc. to ensure a sterile operating environment and prevent cross-infection.

Wearable Medical Devices

Blood Glucose Monitors/Heart Rate Bands: Use sealing rings at the contact area between the device shell and the skin to prevent corrosion of internal components by sweat, and to improve the wearing comfort.

Implantable Devices: Such as pacemaker shells, need to meet biocompatibility (e.g., ISO 10993 certification) and long-term sealing stability.

Medical Pipeline Connections

Infusion Tubes/Urinary Catheters Connectors: Use fine sealing rings at the connection points to prevent liquid leakage and ensure the safety of the medical process.

III. Industrial Equipment and Automation

Hydraulic and Pneumatic Systems

Miniature Hydraulic Pumps: Use fine sealing rings at the connection between the piston and the cylinder to adapt to high-pressure environments (such as above 200 bar), and to reduce friction resistance.

Pneumatic Valves: Use fine sealing rings at the sealing parts of the valve to prevent compressed air leakage and improve system efficiency.

Precision Instrumentation

Pressure Gauges/Flow Meters: Seal the connection between the instrument housing and the sensor to prevent environmental humidity from affecting measurement accuracy.

Analytical Instruments: Such as chromatographs, spectrometers, etc., use sealing rings at the connection between the sample chamber and the optical path to prevent gas leakage or external contamination.

Robot Joints

Miniature Robots: Use fine sealing rings at the rotating parts of the joint to prevent lubricating oil leakage, and to adapt to high-frequency motion requirements.

Collaborative Robots: Seal the connection between the sensor and the mechanical arm to prevent dust from entering and affecting sensitivity.

IV. Automotive and Aerospace Automotive electronics

Engine Control Unit (ECU): Fine sealing rings are used at the sealed areas of the ECU housing to prevent fuel vapor or coolant from seeping in, ensuring the stable operation of electronic components.

Sensor connections: Such as oxygen sensors, pressure sensors, etc., are sealed at the connection points between the plugs and the wiring harness to prevent signal interference.

Aerospace equipment

Satellite components: Fine sealing rings are used at the connection points between the satellite housing and the instruments to prevent cosmic rays or tiny particles from entering, protecting the precision instruments.

Aircraft instruments: Fine sealing rings are used at the sealing areas of pressure gauges, altimeters, etc., to ensure accurate measurement data.

VII. New Energy and Environmental Protection Fields

Battery packaging

Lithium battery cells: Fine sealing rings are used at the connection points between the cells and the housings to prevent electrolyte leakage, and to meet the dynamic sealing requirements during cell expansion.

Fuel cells: Sealing is done at the connection points between bipolar plates and membrane electrodes to prevent hydrogen or oxygen leakage, improving energy conversion efficiency.

Environmental protection equipment

Water quality monitor: Sealing is done at the connection points between the sensor probes and the housings to prevent water samples from contaminating the internal circuits, ensuring data accuracy.

Air purifier: Fine sealing rings are used at the connection points between the filters and the housings to prevent unfiltered air from bypassing the filters, enhancing the purification effect.

VI. Special Scenario Requirements

Extreme environment sealing

Deep-sea equipment: Fine sealing rings are used at the sealed areas of the pressure cabins of submersibles to adapt to high pressure (such as above 1000 bar) and low temperature environments.

High-temperature furnaces and kilns: High-temperature sealing rings (such as fluororubber) are used at the connection points between the furnace doors and the furnaces to prevent heat loss.

Microfluidic control

Microfluidic chips: Fine sealing rings are used at the connection points of the chips to prevent cross-contamination of liquids and ensure the accuracy of experimental results.

Biochips: Sealing is done at the connection points between the sample chambers and the detection modules to prevent sample evaporation or external contamination.

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