This high transparent liquid silicone rubber laser lens produced by Xiangchu features uniform light transmission, temperature and weather resistance, stable precision, meeting optical application requirements. Certified by ISO 9001, we support custom size and hardness according to customer demands, fit for various laser devices.
Material
Optical-grade LSR
Hardness
Shore A 30-50
Temperature
Certifications
Applications
-40°C ~ +150°C
Colors
Transparent, Customizable
# Transparent LSR Laser Lens Optical Seal
Produced by 橡楚（湖北）橡胶有限公司
The Transparent LSR (Liquid Silicone Rubber) Laser Lens Optical Seal is a custom-molded optical sealing component developed specifically for laser systems, designed to address common pain points of traditional sealing materials including poor light transmittance, long-term aging instability, and inconsistent dimensional tolerance in precision optical assemblies.
As a core optical sealing component, this product combines the inherent advantages of LSR materials with precision compression molding processing to achieve a balance of high light transmittance in the laser working wavelength range, reliable environmental sealing, and long-term mechanical stability. It provides dust-proof, moisture-proof, and air-tight protection for laser lens assemblies while maintaining the required optical performance for consistent laser output. Unlike general-purpose silicone seals, our Transparent LSR Laser Lens Optical Seal is formulated and processed exclusively for optical applications, eliminating internal bubbles, surface defects, and optical heterogeneity that can disrupt laser transmission.
橡楚（湖北）橡胶有限公司, 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, specializes in custom Liquid Silicone Rubber product development and manufacturing. We tailor the size, hardness, and optical parameters of each seal to match specific laser lens assembly specifications, ensuring compatibility with a wide range of industrial, medical, and consumer laser systems.
We use high-purity raw LSR formulations without opacifying fillers or impurities that would scatter or absorb laser energy, maintaining stable transmittance across the common visible to near-infrared wavelength range used in most laser systems. Unlike transparent rigid seals (such as glass or epoxy) that are prone to cracking under mechanical stress or thermal shock, our flexible LSR seal adapts to minor assembly misalignments and temperature fluctuations without altering its optical properties or sealing performance. Each finished product undergoes 100% visual inspection for internal defects and surface quality to ensure no defects affect laser transmission.
Liquid silicone rubber has inherent resistance to UV radiation, ozone, and thermal aging, making it suitable for both indoor and outdoor laser applications. At extreme operating temperatures ranging from -40℃ to 200℃, the seal maintains its hardness, dimensions, and optical clarity without hardening, cracking, or yellowing that would degrade performance over time. It also has extremely low water absorption, preventing moisture ingress into the lens assembly that can cause fogging or damage to sensitive optical components in high-humidity environments.
At 橡楚（湖北）橡胶有限公司, we produce each Transparent LSR Laser Lens Optical Seal to customer-provided drawings, with customizable hardness, dimensions, and edge profiles to match specific lens mounting designs. We can manufacture seals for small-diameter consumer laser lenses up to large-diameter industrial laser focusing lenses, with tight dimensional tolerances that meet the precision requirements of optical assemblies. Our in-house mold design and manufacturing capability allows for fast lead times for both prototype and mass production orders.
Our LSR formulation has low extractables and does not leave residue that can contaminate lens surfaces. It is compatible with common metal housing materials (aluminum alloy, stainless steel, titanium alloy) and glass optical components, with no chemical reaction or degradation over long service life. For assemblies requiring adhesion, we can offer surface pre-treatment to improve bonding between the LSR seal and the housing or lens.
The Transparent LSR Laser Lens Optical Seal is suitable for a wide range of laser system applications across multiple industries:
Hardness selection is based on the assembly method and required compression of the seal:
We accept fully custom size manufacturing per your drawing requirements. Common outer diameters range from 5mm to 200mm, and cross-sectional thickness ranges from 0.5mm to 10mm. Please specify the required inner diameter, outer diameter, thickness, and any special edge or groove requirements when placing an order. Our engineering team can also provide guidance on seal design to optimize sealing performance for your assembly.
We offer two standard material grades to match different application requirements:
橡楚（湖北）橡胶有限公司 operates a quality management system certified to ISO 9001, with strict quality control processes implemented from raw material incoming inspection to finished product outgoing testing. All incoming LSR raw materials are tested for optical transmittance and physical properties to ensure they meet our formulation specifications. Each production batch undergoes performance testing including dimensional inspection, visual inspection for optical defects, and compression set testing to verify consistency with technical specifications.
We are committed to delivering custom LSR products that meet customer requirements and industry standards. For any questions about product selection, customization, or pricing, please contact us at:
