This LSR LED lens overmolding part is produced by Xiangchu Rubber, made of high-transparency liquid silicone rubber. It features stable light transmittance, good sealing performance, insulation, temperature resistance and aging resistance, suitable for LED lighting assembly, parameters can be customized as required.
Material
Optical Transparent LSR
Hardness
Shore A 30-50
Temperature
Certifications
Applications
-40°C ~ +150°C
Colors
Transparent, Translucent, Customizable
# Liquid Silicone LED Lens Overmolding Part
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Liquid Silicone LED Lens Overmolding Part is a custom-molded silicone component designed to integrate with LED optical systems, providing structural bonding, environmental protection, and optical performance enhancement for LED lighting applications. Manufactured by 橡楚（湖北）橡胶有限公司 at our facility in 湖北省鄂州市鄂城区经济开发区凡口街道内河巷54号, these overmolding parts are produced from food-contact and industrial-grade liquid silicone rubber (LSR) using precision liquid injection molding, delivering consistent dimensional accuracy and long-term stability in demanding operating environments.
As a specialized LSR product, our LED lens overmolding bonds securely with polycarbonate (PC), polymethyl methacrylate (PMMA), aluminum, and copper LED housing materials to form a seamless, gap-free assembly. This eliminates the need for additional adhesive layers, reduces assembly steps, and prevents dust, moisture, and contaminants from entering the optical path of the LED module. Unlike standalone plastic lenses, LSR overmolding parts offer adjustable optical refraction and excellent shock absorption, protecting the fragile LED chip and primary lens from mechanical impact and thermal cycling damage.
Our core selling points for this product include custom molding to match unique LED module designs, strict optical tolerance control, proven resistance to long-term UV exposure and high temperatures, and reliable adhesion between silicone and base materials without delamination over the product lifespan. We work directly with lighting manufacturers to develop overmolding solutions tailored to specific power outputs, form factors, and environmental requirements.
All our Liquid Silicone LED Lens Overmolding Parts are produced from addition-cure platinum-catalyzed liquid silicone rubber, with the following core material properties:
Finished overmolding parts meet the following performance requirements:
Our standard LSR injection molding process parameters for overmolding parts are controlled within the following ranges:
Our LSR overmolding parts can be customized to achieve specific light diffusion, refraction, or collimation effects matching your LED module design. We control material transparency and refractive index during compounding, ensuring consistent light output and uniform illumination across the entire lens array. The low shrinkage rate of our LSR material guarantees that finished parts maintain dimensional accuracy over time, preventing deviations in optical performance that can occur with lower-quality molded silicone components.
LSR material inherently resists UV radiation, ozone, extreme temperatures, and moisture, making our overmolding parts ideal for both indoor and outdoor LED applications. Unlike epoxy or thermoplastic overmolding, our LSR does not yellow or become brittle after years of exposure to heat and UV light, preserving optical clarity and structural integrity for the full lifespan of the LED lighting product. The material is also resistant to common cleaning chemicals and atmospheric pollutants, reducing maintenance requirements for outdoor installations.
We formulate our LSR compounds with intrinsic adhesion promoters that create a permanent, gap-free bond with common LED housing and lens materials during the molding process. This eliminates the risk of delamination, water intrusion, or air gaps that can compromise optical performance and reduce product lifespan. The seamless overmolding also improves overall structural strength of the LED module, reducing vibration damage during transportation and operation.
As a dedicated LSR manufacturer, we support custom development of overmolding parts for any LED form factor, from small miniature LED components to large architectural lighting modules. Our in-house mold fabrication and liquid injection molding capabilities allow us to deliver prototype and production batches with short lead times, supporting rapid product development cycles for lighting manufacturers. We can also add custom features such as mounting tabs, seal lips, and alignment markers directly into the overmolding part to simplify final assembly.
Liquid Silicone LED Lens Overmolding Parts are used across a wide range of LED lighting applications, including:
Choose the appropriate LSR hardness based on your application requirements:
We manufacture custom-sized overmolding parts based on your 2D drawings or 3D CAD files. Our standard tolerance levels suit most LED applications, and we can offer tighter tolerance control for high-precision optical applications upon request. Please specify your required dimensional tolerance and maximum part dimensions when submitting an inquiry.
Select the appropriate material grade based on your application:
At 橡楚（湖北）橡胶有限公司, we implement strict quality control throughout the entire manufacturing process, from raw material incoming inspection to finished product testing. We hold ISO 9001 certification for our quality management system, and all processes are aligned with this standard to ensure consistent product quality.
Our standard quality control procedures include:
For any questions about our Liquid Silicone LED Lens Overmolding Parts, please contact us:
