Custom manufactured by Xiangchu, this liquid silicone overmolding part for LED lampshade features excellent sealing performance and aging resistance. It fits various LED lighting products, we support customization of color, hardness and size, meets ISO 9001 quality control requirements.
Material
Industrial LSR
Hardness
Shore A 30-60
Temperature
Certifications
Applications
-40°C ~ +150°C
Colors
Black, White, Transparent, Customizable
# Liquid Silicone LSR LED Lampshade Overmolding Part
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Liquid Silicone Rubber (LSR) LED lampshade overmolding parts are custom-molded components designed to combine the optical performance of rigid LED housing or diffuser bases with the protective, sealing, and heat-resistant properties of LSR. Manufactured by 橡楚（湖北）橡胶有限公司 (Xiangchu (Hubei) Rubber Co., Ltd.) 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 overmolded parts are precision-engineered to meet the demanding performance requirements of modern LED lighting systems.
Unlike standalone silicone or plastic lampshade components, our overmolding parts create a permanent, integrated bond between LSR and rigid substrates (including engineering plastics, aluminum, and glass) during the liquid injection molding process. This integration eliminates gaps between components, delivers consistent light diffusion, and improves resistance to thermal cycling, moisture, and environmental degradation. Our core selling points for this product include custom dimension matching to customer design requirements, excellent optical transparency and light diffusion control, reliable long-term adhesion between LSR and substrates, and compliance with global RoHS environmental standards for electronic products.
All of our LSR LED lampshade overmolding parts are produced from 100% virgin food-grade or electronic-grade liquid silicone rubber, with no recycled material content, to ensure consistent performance across the entire product lifespan. We work directly with lighting product manufacturers to produce custom overmolding parts in batch quantities, with flexible order sizes to meet both prototyping and mass production needs.
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Our LSR overmolding parts use addition-cure liquid silicone rubber as the base material, with the following core material properties:
Finished overmolding parts meet the following physical performance standards:
Our LSR overmolding process is controlled to the following parameters to ensure consistent part quality:
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Our in-mold overmolding process creates a chemical bond between LSR and the rigid substrate, rather than relying on adhesive assembly. This eliminates common failure points such as delamination, gap leakage, and seal degradation over time. The bonded overmolding provides an IP65-level waterproof seal for outdoor LED lighting fixtures, preventing moisture and dust from entering the housing and damaging internal electronics.
We can adjust the light transmittance and diffusion properties of the LSR material to match specific lighting design requirements. Transparent grades deliver high light output for high-power LED applications, while diffusion grades eliminate hot spots and create uniform, soft lighting that meets visual comfort standards for commercial and residential lighting. The material maintains consistent optical properties over decades of use, with no yellowing or light output degradation from UV exposure or thermal cycling.
High-power LED systems generate significant concentrated heat that can degrade conventional plastic or rubber components over time. Our LSR material maintains its mechanical and optical properties across a wide temperature range, from sub-zero outdoor winter conditions to continuous high-temperature operation of 100W+ LED fixtures. The thermal conductivity of LSR also helps dissipate small amounts of heat from the LED module, contributing to longer service life for the entire lighting system.
As a custom LSR molder, we can produce overmolding parts in nearly any size or shape to match customer design drawings, from small overmolded seals for downlight fixtures to large shaped overmolding parts for outdoor street lamps. We can also integrate additional features such as mounting tabs, sealing gaskets, and notches directly into the overmolding process, reducing secondary assembly steps for our customers.
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Liquid Silicone LSR LED lampshade overmolding parts are used across a wide range of LED lighting applications, including:
For explosion-proof and underwater applications, our LSR overmolding parts are designed to meet the specific sealing and environmental resistance requirements of these use cases, with consistent performance tested through 1000-hour thermal cycling and water immersion tests before shipment.
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All LSR LED lampshade overmolding parts are custom manufactured per customer-provided CAD drawings or 3D models. We can produce parts with maximum dimensions up to 500 mm x 500 mm, with thickness ranging from 0.5 mm to 10 mm. For parts outside this range, please contact our sales team to discuss custom production capabilities.
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At 橡楚（湖北）橡胶有限公司 (Xiangchu (Hubei) Rubber Co., Ltd.), we maintain a strict quality management system certified to ISO 9001, with quality control checks at every stage of production: from incoming raw material inspection to in-process molding parameter monitoring, and final finished part dimensional, visual, and performance testing before shipment.
All incoming batches of liquid silicone rubber are tested for hardness, viscosity, and curing performance to ensure consistency. We maintain full production records for every order, and can provide material test reports (MTR) and performance test reports upon customer request. We do not use recycled silicone material in any of our LSR products, ensuring consistent long-term performance for all our LED lampshade overmolding parts.
For inquiries, custom quotes, or technical support, please contact us at:
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