Liquid Silicone Rubber Metal Overmolding

Liquid Silicone Rubber Metal Overmolding is a high-precision solution offered by Aobo Silicone that uses liquid silicone injection molding to encapsulate metal parts, providing flexibility, structural support, electrical connectivity, and sealing functionality. This technology is widely applied in electronic device buttons, medical catheter connectors, industrial shock absorbers, high-pressure hydraulic components, and automotive engine seals.

Aobo Silicone is equipped with 46 advanced injection molding machines, a 1,000 m² mold workshop, and a team of 35 mold engineers capable of completing prototype molds in 3 days and production molds in 15 days. We provide one-stop services including mold R&D, design, and manufacturing, ensuring every product meets high reliability and consistent performance for mass production.

Why Choose Aobo Silicone

Choosing Aobo Silicone ensures a reliable factory direct solution:

● Rich Experience: Years of expertise in LSR injection and metal overmolding for electronics, medical, automotive, and industrial fields.

● Professional Team: 35 mold engineers ready for fast custom responses.

● One-Stop Service: Full process from mold R&D, design, to manufacturing, ensuring efficient delivery.

● Safe Materials: Medical-grade LSR, hypoallergenic and residue-free, meeting FDA/LFGB standards.

Process and Advantages

The core process of Liquid Silicone Rubber Metal Overmolding includes metal surface pre-treatment, primer application, liquid silicone injection, heating and curing, cooling, and final quality inspection. The liquid silicone forms chemical and physical dual bonding with the metal surface, ensuring stability in high-temperature, vibration, and long-term use conditions.

● Strong Adhesion: Liquid silicone penetrates metal micro-pores and, combined with primer, creates chemical and physical dual bonding, resulting in higher peel strength than SSR.

● Temperature and Weather Resistance: Functional from -60°C to 200°C, resistant to aging, acids, bases, and oil.

● High Efficiency: Multi-cavity molds allow over 1, 000 units per hour, supporting large-scale production.

● Safe Materials: Medical-grade LSR, hypoallergenic, residue-free, suitable for medical devices, electronics, and food-contact components.

● Complex Geometry Capability: Supports intricate shapes and fine textures, enabling one-step molding of buttons, seals, and miniature connectors.

● Function Integration: Provides sealing, anti-slip, electrical insulation, and shock absorption, reducing assembly complexity and costs.

● Environmental Adaptability: Maintains stability and performance under prolonged heat, moisture, oil, and mechanical wear.

Liquid Silicone Rubber Metal Overmolding delivers exceptional functional integration, durability, sealing, appearance, and mass-production efficiency, making it ideal for electronics, medical, industrial, and automotive high-performance components.

Usage Notes

● Avoid long-term exposure above 200°C to maintain silicone stability.

● Inspect metal and silicone surfaces before installation to remove debris or defects.

● Ensure complete curing in high-pressure or high-vibration applications to prevent delamination.

● Avoid contact with strong acids, strong bases, or corrosive chemicals.

● Clean with a soft cloth and avoid sharp objects that may scratch the surface.

Applications

● Consumer Electronics: Smartwatch buttons, remote control keys, headphone cases, portable medical device housings.

● Medical Devices: Respiratory masks, catheter connectors, surgical instrument components, syringe safety components.

● Industrial Parts: Seals, shock absorbers, valve components, precision instrument housings, sensor protective covers.

● Automotive Components: Engine oil seals, high-pressure hydraulic parts, controller housings, electrical connectors.

● Outdoor Equipment: Waterproof electronic device buttons, industrial motor protective covers, sensor housings.

● Daily Use Products: Food-grade kitchenware, children’s safety electronic components, reusable tool handles.

Aobo Silicone can customize size, hardness, color, and temperature resistance for Liquid Silicone Rubber Metal Overmolding according to client requirements, ensuring stable performance across various environments.

Performance and Application Table

FAQ

Q: What is the difference between LSR and SSR?

A: LSR is suitable for high-precision, complex, large-scale production; SSR is more cost-effective for low-precision, large parts, or budget-limited projects.

Q: How is adhesion between silicone and metal ensured?

A: Through primer application and precise mold design, liquid silicone penetrates metal micro-pores, forming chemical and physical dual bonding to prevent delamination.

Q: What industries are suitable for the product?

A: Consumer electronics, medical devices, industrial components, automotive hydraulic parts, outdoor electronics, and food-grade daily-use products, all supported by Liquid Silicone Rubber Metal Overmolding.

Q: How does Aobo Silicone ensure production quality?

A: Equipped with 46 injection machines, a 1,000 m² mold workshop, and 35 engineers, Aobo Silicone strictly inspects products to guarantee reliability and consistent performance.