Battery caps
Battery End Seal Series

Li-SOCl2 Battery End Seals

Sinopride supplies glass-to-metal battery end seals for lithium thionly chloride(Li-SOCl2) batteries.The seals provide hermetic sealing and electrical insulation between the terminal pin and metal cover,helping prevent electrolyte leakage and external moisture ingress.
Dimensions and configurations can be customized to suit different battery designs.
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Technical Specifications

Battery End Seals
Application Code Cap Size Leakage Rate insulation resistance
/500V DC		 Push-pull Force Remark
Li-SOCl2 Battery 14250 short-pinned ø13.5*7.5 ＜1x10-9Pa*m³/s 1000MΩ 2000N Weldable nickel needle

14505 short-pinned

 ø13.5*14 2000N Weldable nickel needle

17505 short-pinned

 ø15.8*14 2000N

18505 short-pinned

 ø17.5*11 2000N

26500 short-pinned

 ø24.5*11 2100N

34615 short-pinned

 ø31.5*11 2200N

14505 long-pinned

 ø13.5*46 2000N

18505 long-pinned

 ø17.5*46 2000N

26500 long-pinned

 ø24.5*46 2000N

34615 long-pinned

 ø31.5*56 2000N
Li-MnO2 Battery CR17 ø15.88*7.1 /

Typical Applications

 
  • Li-SOCl2 Battery caps
    Large cylindrical Li-SOCl2 Batteries
  • Li-SOCl2 Battery End Seals
    Medium cylindrical Li-SOCl2 Batteries
  • Li-SOCl2 Battery End Seals
    Compact cylindrical Li-SOCl2 Batteries
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How Do Battery End Seals
Protect Li-SOCl2 Batteries?
 
  • battery caps
    Hermetic Sealing

    Forms a gas-tight seal that helps prevent electrolyte leakage while limiting the ingress of external moisture and contaminants.

  • battery caps
    Electrical Insulation

    The sealing glass electrically isolates the terminal pin from the metal cover, helping prevent short circuits between conductive components.

  • battery caps
    Electrical Feedthrough

    The sealed terminal pin provides a secure conductive feedthrough between the battery interior and the external circuit.

  • battery caps
    Long-Term Battery Reliability

    Reliable sealing, insulation, and terminal stability help maintain the integrity of Li-SOCl2 batteries during long-term storage and operation.

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Li-SOCl2 Batteries:
Characteristics & Applications
Lithium thionyl chloride (Li-SOCl2) batteries are primary batteries known for high energy density, low self-discharge, long shelf life, and wide-temperature operation.
They are widely used in utility meters, industrial monitoring, tracking systems, and other long-life electronic device.
Reliable battery end seals help maintain hermetic sealing and electrical insulation throughout long-term service.
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What Makes Sinopride

Li-SOCl₂Battery End Seals Reliable?

 
  • Material R&D

    Sinopride develops sealing glass formulations with thermal expansion and sealing characteristics matched to the metal components,supporting stable glass-to-metal sealing.

  • Process Control

    Key sealing parameters are controlled throughout production to maintain consistent glass flow, bonding, and seal integrity.

  • Precision Manufacturing

    Dimensional and structural control of the terminal pin, glass insulator, and metal cover helps ensure proper assembly and sealing consistency.

  • Quality Control

    Standardized inspection and process controls are applied from raw materials through finished products to support stable quality and batch consistency.

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Manufacturing Considerations

 
 

Sealing Glass Formulation

Chemical resistance and CTE compatibility supports stable hermetic sealing.

Preforms & Tooling Control

Consistent preforms and fixtures help maintain dimensional and assembly accuracy.

Sealing Temperature

Controlled sealing temperature ensures proper glass flow and reliable bonding.
Sinopride Battery End Seal Capabilities
R&D, Manufacturing & Custom Solution
Sinopride develops and manufactures glass-to-metal battery end seals for both Li-SOCl₂ and Li-MnO₂ batteries.
Our capabilities cover sealing cover sealing glass R&D, precision manufacturing, quality control, and customized dimensions and configurations for different cylindrical battery designs.
< 1x10-9Pa*m³/s
Leakage Rate
> 1000MΩ
Insulation Resistance at DC 500V
> 2000N
Pull Force
Ø 13.5-31.5mm
Available Cap Diameters
Short/Long
Pin Configurations
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