LSR Molding for New Energy Vehicles: Meeting the Demand for Reliable Silicone Sealing Components

LSR Molding for New Energy Vehicles: Meeting the Demand for Reliable Silicone Sealing Components

The rapid development of electric vehicles and new energy systems is creating new requirements for reliable sealing components. Silicone rubber is increasingly used in automotive electrical connectors, wire harnesses, sensors, battery-related components, and other areas where sealing performance and long-term durability are important.

Liquid Silicone Rubber (LSR) injection molding provides an efficient way to manufacture these precision silicone components. Compared with traditional manual or compression molding processes, LSR injection molding can integrate automated material dosing, mixing, injection, curing, and part removal into a continuous production process.

Why LSR Is Suitable for Automotive Sealing

Automotive sealing components may be exposed to temperature changes, vibration, moisture, dust, oils, and other environmental conditions. LSR is widely used for seals, grommets, connector components, and other elastomeric parts because of its flexibility and resistance to demanding environments.

For high-volume production, consistent A/B material metering is particularly important. Accurate dosing helps maintain stable material ratios and therefore supports consistent hardness, weight, and molding performance from shot to shot.

Key Considerations for EV Silicone Components

When developing an LSR production solution for new energy vehicle components, manufacturers normally need to consider:

• Part geometry and sealing structure
• Required silicone hardness
• Material viscosity
• A/B mixing ratio
• Mold cavity quantity
• Gate and vent design
• Injection pressure and speed
• Mold temperature
• Automatic demolding
• Inspection requirements

For wire seals and connector grommets, dimensional consistency is especially important because the silicone component must work together with the corresponding cable, terminal, and connector structure.

Automated LSR Production

As automotive production moves toward higher levels of automation, LSR injection molding can be integrated with automatic demolding, inspection, and material feeding systems.

A complete production solution can therefore include:

LSR material → dosing system → mixing → injection molding → curing → automatic demolding → inspection

This makes LSR technology suitable for manufacturers looking to build stable and scalable production processes for automotive and new energy components.