Medical-Grade Optical Clear Liquid Silicone Rubber
Medical-Grade Optical Clear Liquid Silicone Rubber (LSR) is a high-performance silicone material designed for medical and optical applications, combining biocompatibility, high transparency and excellent physical and chemical properties.
Core Features
High Transparency
Light transmittance ≥ 90% (visible light range), close to glass, suitable for instruments that require clear visualization (such as endoscopes, optical sensors).
Biocompatibility
Complies with ISO 10993, USP Class VI and other medical certifications, non-toxic, non-sensitizing, and can be in long-term contact with human tissue or body fluids.
Sterilization Resistance
Resistant to high temperature and high pressure steam, ethylene oxide (EO), gamma rays and ultraviolet disinfection, no yellowing or cracking after repeated sterilization.
Physical properties
Hardness range: Shore A 10~80 (adjustable hardness);
Temperature range: -50°C ~ 200°C;
Low precipitation (Non-Leaching), avoid contamination of sensitive environments (such as drug delivery).
Chemical stability
Resistant to blood, alcohol, weak acid and weak alkali corrosion, no adsorption of protein or microorganisms.
Typical medical applications
Optical instrument components
Endoscope lens seal, optical fiber catheter coating, laser therapy device light-transmitting window.
Implant/interventional devices
Transparent intraocular lens (IOL) gasket, microfluidic chip, catheter visible scale layer.
Wearable medical devices
Optical sensor bonding layer (such as blood oxygen monitoring patch), transdermal drug delivery patch.
Laboratory consumables
PCR microfluidic chip, transparent culture dish sealant.
Processing technology
Injection molding (LSR Injection Molding): Precision molding of complex optical components requires a high cleanliness workshop.
Coating/potting: used to seal or protect the surface of optical components.
UV curing: fast curing, suitable for thin films or coatings.
Certification requirements
Compliance with regulations such as FDA 21 CFR 177.2600 and EU MDR (CE) must be clarified.