Custom LSR LED Light Guide Buffer, Silicone Parts for LED Lighting
LSR LED Light Guide Column Buffer
Liquid Silicone Rubber Injection MoldingPublished on May 30, 2026
This LED light guide column buffer produced by Xiangchu is processed with liquid silicone rubber, it has excellent buffer shock absorption effect and good waterproof sealing performance. It can adapt to different specifications of LED lighting products, supports customized parameters, and passes ISO 9001 quality control.
Material
Industrial LSR
Hardness
Shore A 30-50
Temperature
-40°C ~ +150°C
Colors
Black, White, Transparent, Customizable
Certifications
ISO 9001
Applications
Suitable for all kinds of indoor and outdoor LED lighting fixturesLED displays and other productsit provides buffer and shock absorption protection for the light guide columnand helps improve...
led light guide bufferlsr buffer partsilicone part for ledled silicone accessoryindustrial lsr part
Dielectric Strength18~22 kV/mm
Elongation at Break550~750 %
Thermal Conductivity0.22~0.28 W/(m·K)
Vulcanization Temperature120~150 ℃
Operating Temperature Range-40℃~180℃
Linear Expansion Coefficient2.2×10^-4 /℃
Relevant Certification StandardsROHS 2.0, REACH, FDA 21 CFR
# LSR LED Light Guide Column Buffer
Manufactured by 橡楚（湖北）橡胶有限公司
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Product Overview
The LSR LED Light Guide Column Buffer is a precision-molded liquid silicone rubber component designed to provide secure cushioning, consistent light transmission, and long-term environmental stability for LED lighting assemblies. As a core specialized LSR product from 橡楚（湖北）橡胶有限公司, this buffer component addresses common pain points in LED system design: mechanical stress damage to light guide columns, light leakage between mating components, and performance degradation under extreme temperature or humidity conditions.
Liquid silicone rubber (LSR) is inherently suited for optical and mechanical buffer applications, combining low compression set, optical clarity tunability, and biocompatibility with excellent molding precision. Our LSR LED Light Guide Column Buffers are custom manufactured to match the exact dimensions and performance requirements of your LED assembly, eliminating gaps between the light guide column, LED PCB, and housing while absorbing vibration and mechanical shock from handling, installation, and operation. Every component is produced under controlled manufacturing conditions at our facility located at 湖北省鄂州市鄂城区经济开发区凡口街道内河巷54号, to ensure consistent quality across production runs.
Core selling points of this product include: precise custom molding to match your assembly design, tunable optical transmittance and hardness, excellent long-term aging resistance, and compatibility with high-volume automated LED assembly processes.
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Technical Specifications
Material Properties
Our LSR LED Light Guide Column Buffers are manufactured from high-purity addition-cured liquid silicone rubber, with the following baseline material properties:
Dimensional tolerance: ±0.02mm for dimensions <10mm; ±0.05mm for dimensions 10-50mm
Post-curing: 4h at 150°C to eliminate residual volatile compounds
Surface finish: Ra ≤0.8μm for optical contact surfaces
Packing: Clean ESD-safe packaging for optical components
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Product Advantages
1. Precision-matched Optical and Mechanical Performance
Unlike generic rubber buffers, our LSR LED Light Guide Column Buffers are tuned for the unique requirements of LED light guide systems. We can adjust transmittance (from semi-opaque diffusing to fully clear) and refractive index to match your light guide column material, reducing unwanted light loss while maintaining consistent cushioning performance. The LIM process delivers the tight dimensional tolerances required for tight-fit assemblies, eliminating alignment errors that reduce light output efficiency.
2. Excellent Long-term Environmental Stability
LSR inherently resists UV degradation, ozone exposure, and temperature cycling, outperforming thermoplastic elastomers (TPE) and general-purpose rubbers in long-term LED applications. Our components maintain consistent hardness, compression set, and optical properties after 1000 hours of accelerated aging at 150°C, preventing loosening, light leakage, or discoloration over the 50,000+ hour service life of most LED lighting systems.
3. Low Compression Set for Long-lasting Cushioning
A common failure mode for generic LED buffer components is permanent deformation after prolonged compression, which leads to loose light guide connections, increased vibration, and light leakage. Our addition-cured LSR formulation maintains a compression set of ≤12% under standard test conditions, ensuring the buffer retains its shape and cushioning performance for the entire service life of the LED assembly.
4. Customizable for Any Assembly Design
We offer full custom molding services to match your specific LED assembly requirements, from small micro buffers for mini LED displays to larger components for architectural lighting. We can add custom features such as locating ribs, adhesive backing, or stepped profiles to simplify automated assembly and reduce your production labor costs.
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Applications
Our LSR LED Light Guide Column Buffers are suitable for a wide range of LED lighting and display applications, including:
Consumer Electronics: Backlight assemblies for LCD displays, smartphone notification LEDs, smart watch indicator lights, and automotive infotainment display buffers. The buffer absorbs mechanical shock from drop impacts, protecting the fragile light guide column from cracking while preventing light leakage between adjacent indicators.
Automotive Lighting: Interior ambient lighting assemblies, dashboard indicator lights, and exterior taillight light guide buffer components. LSR’s resistance to extreme temperatures and automotive fluid exposure ensures consistent performance from -40°C winter conditions to 80°C interior summer temperatures.
Architectural and Commercial Lighting: Linear LED strip lighting, recessed downlight assemblies, and decorative LED panel lighting. The buffer reduces vibration transfer from the housing to the light guide, prevents fixture rattle, and controls light diffusion to achieve uniform illumination.
Medical LED Devices: Diagnostic lighting equipment, medical device indicator panels, and wearable medical LED devices. Our LSR material is non-toxic, latex-free, and resistant to repeated sterilization, meeting basic requirements for low-bioburden medical components.
Industrial Control Panels: Status indicator lights for industrial machinery, control room display panels, and outdoor LED signage. The LSR buffer resists UV exposure and moisture ingress, preventing performance degradation in outdoor and industrial environments.
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Selection Guide
To ensure optimal performance for your application, follow this selection guide when ordering LSR LED Light Guide Column Buffers:
Hardness Selection
20-30 Shore A: Recommended for applications requiring maximum vibration absorption and cushioning, such as portable consumer electronics and automotive mobile components. The soft material conforms to irregular mating surfaces to minimize light leakage.
30-40 Shore A: General-purpose hardness for most static LED lighting assemblies, balancing cushioning performance and dimensional stability. This is our most popular option for architectural and commercial lighting.
40-50 Shore A: Recommended for high-precision assemblies requiring tight dimensional retention, such as mini LED micro-display components and high-density indicator panels.
Size Specifications
All our LSR LED Light Guide Column Buffers are custom manufactured to your drawing specifications. We accommodate components from 2mm up to 200mm in maximum dimension, with standard tolerances as listed in our technical specifications. Tighter tolerances are available for high-precision applications on request.
Material Grade
General Optic Grade: Standard clear LSR for most commercial and industrial LED applications, meets RoHS compliance requirements.
Diffusion Grade: LSR loaded with inert optical diffuser particles to provide uniform light diffusion for indicators and ambient lighting.
High Temperature Grade: Low-volatility LSR for applications requiring continuous exposure to temperatures above 150°C, such as automotive engine compartment lighting.
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Quality Assurance
At 橡楚（湖北）橡胶有限公司, we maintain a strict quality management system certified to ISO 9001, ensuring every LSR LED Light Guide Column Buffer meets your specified requirements before shipment. Our quality control process includes:
Incoming raw material inspection to verify LSR purity, hardness, and optical properties before production
In-process dimensional checks every 2 hours during production to maintain tolerance compliance
100% visual inspection for surface defects, discoloration, or molding imperfections for optical components
Final batch testing for compression set and transmittance to confirm performance matches specifications
We are committed to delivering consistent, high-quality LSR components for your LED designs. For inquiries, custom quotes, or technical support, contact us at:
