Liquid Silicone Rubber (LSR) overmolding is an advanced manufacturing process that combines the flexibility
sealing performance of silicone rubber with rigid substrates such as plastics or metals. As a professional silicone overmolding manufacturer, Siliconeplus.net provides custom LSR overmolding solutions designed to meet the high-performance and regulatory demands of medical, food, automotive, electronics, and industrial B2B applications.
LSR overmolding involves injecting platinum-cured liquid silicone rubber directly onto pre-molded components
,forming a permanent chemical or mechanical bond. This process eliminates secondary assembly steps, improves product reliability, and delivers seamless, burr-free silicone rubber parts. Compared with traditional assembly or adhesive bonding, liquid silicone overmolding ensures superior waterproofing, insulation, and long-term durability.
From a material perspective, liquid silicone rubber offers outstanding thermal stability
maintaining elasticity and mechanical strength across a wide temperature range from -60°C to over 230°C. It is resistant to UV radiation, ozone, aging, and aggressive chemicals, making LSR overmolded components ideal for harsh operating environments and repeated sterilization. These characteristics are especially critical for medical devices, food-contact equipment, and outdoor or industrial electronics.
Regulatory compliance is a core concern for global B2B buyers.
Siliconeplus utilizes FDA- and LFGB-compliant silicone raw materials and supports REACH and RoHS requirements. Our controlled production processes enable cleanroom manufacturing, precision molding, and stable mass production, ensuring every silicone overmolded component meets international safety and quality standards.