Industrial-Grade Liquid Silicone Rubber (LSR)
Industrial-grade LSR liquid silicone compounds for injection molding. High thermal stability, chemical resistance, and dimensional precision. Hardness 20-90 Shore A. Compliance with EN 45545-2, UL94, EC 1935/2004, and FDA 21 CFR 177.2600. Manufacturing under ISO 9001 and ISO 13485 control.
Material Principle
Industrial LSR liquid silicone is a two-component, platinum-cured elastomer, injectable and fully automatable. It offers great precision, repeatability, and thermal stability, making it ideal for technical parts subjected to high mechanical or chemical demands.
Formulation and Certifications
Compliant with EN 45545-2, UL94 V-0, EC 1935/2004, and FDA 21 CFR 177.2600. Available in conductive, antistatic, fire-retardant, self-lubricating, or high-temperature versions. Its clean platinum cure ensures the absence of byproducts and excellent thermal aging resistance.
Technical Properties
Available in hardnesses from 20 to 90 Shore A. Thermal resistance from -60 °C to +230 °C, excellent dielectric behavior, low compression set, and stability against oils, fuels, ozone, and UV radiation. Translucent or pigmented color according to technical specification.
Production Environments
Manufacturing in an automated industrial environment or an ISO 8 cleanroom for mixed or high-purity parts. All processes validated under ISO 9001 and ISO 13485 with batch control, traceability, and mechanical, thermal, and electrical testing.
Product Gallery
Key Technical Data
Typical values obtained according to series datasheets (17, 30) and indicated standards. May vary based on hardness, formulation, and application. Final validation is the customer's responsibility.
| Property | Typical Values | Standard |
|---|---|---|
| Hardness (Shore A) | 20 – 70 (núcleo habitual: 40–60) | ISO 7619-1 |
| Tensile Strength | 7 – 11 MPa | ISO 37 |
| Elongation at Break | 400 – 1200 % | ISO 37 |
| Tear Resistance (Type C) | 17 – 47 kN/m | ISO 34-1 |
| Density | 1,11 – 1,20 g/cm³ | ISO 2781 |
| Working Temperature | –60…+200 °C (up to +215 °C in some formulations) | — |
| Tolerances | Molding Class M2 (LSR Injection) | ISO 3302-1 |
| Sectoral (On Request) | FDA / CE 1935/2004 / USP VI / ISO 10993 / RoHS / REACH | — |
Certifications and Regulatory Compliance in Silicone Molding
Every molding batch is manufactured under strict validation protocols, guaranteeing conformity with international standards and integral traceability of the material and the mold.
Main Certifications
- ISO 9001:2015 – Quality Management System
- ISO 13485:2016 – Medical Devices
- EN 9100 – Aerospace and Defense
- GMP – Good Manufacturing Practices
- ISO 10993 – Medical Biocompatibility
- USP Class VI – Pharmaceutical Biocompatibility
Regulatory Compliance
- FDA 21 CFR 177.2600 – Food Contact
- EC 1935/2004 – Materials in Contact with Food
- EN 45545-2 – Railway Fire Protection
- UL94 – Material Flammability
- ISO 10993 and USP Class VI – Medical and Pharmaceutical Biocompatibility
- REACH (1907/2006) and RoHS (2015/863) – Chemical and Electrical Substances
Main Application Sectors
Key Applications
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Gaskets, connectors, and electrical insulators
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High-precision technical parts
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Electronic and optical encapsulation
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Valves, membranes, and technical plugs
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Components resistant to temperature and chemical agents
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Precision gaskets for hydraulic fluid transmission equipment
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Pressure compensation membranes in outdoor control boxes
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Insulators and protectors for coils and transformers (Dielectric)
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Self-lubricating parts for slow-moving mechanisms
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Encapsulation of LED lighting modules for outdoor use (Optical)
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Sealing gaskets in railway traction motors (EN 45545-2)
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Purge valves in high-temperature cooling systems
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Components for injectors and fuel systems (FVMQ)
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Plugs for level and flow sensors in industrial tanks
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Closure gaskets for vacuum equipment in the semiconductor industry
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Vibration insulators for motor-mounted electronics
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Seals for access lids to climatic test chambers
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Membranes for technical gas and air pressure regulators
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Protection parts for pneumatic and manual tools
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Gaskets for energy accumulator lids (Fire-retardant)
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Connectors for high-end electric vehicle batteries
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Plugs for filling holes in lubrication equipment
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Safety valves for industrial gas dispensers
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Encapsulation of navigation sensors in aerial equipment
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Sealing parts for pressurised water systems
Manufacturing and Delivery Options
- Hardness: 10 to 80 Shore A
- Formulations: Standard, Conductive, Fire-retardant, Self-lubricating, High-temperature
- Colors: Translucent, black, grey, red, or custom RAL
- Certifications: EN 45545-2, UL94, EC 1935/2004, FDA
- Production: Industrial or validated ISO 8 cleanroom
- Delivery: Traced, tested, and assembly-ready parts
- Entrega: piezas trazadas, ensayadas y listas para montaje
Product Selection Matrix
| Customer Requirement | Recommended Solution |
|---|---|
| Food-contact components | Food-Grade LSR |
| Precision technical parts | HCR Injection Molding |
| Liquid parts for industrial use | Industrial LSR |
| Integration with metallic or plastic inserts | Overmolding |
| Integración con insertos | Overmolding |
Technical Conclusion and Recommendations
Industrial LSR liquid silicone from ProSilicones64 offers a unique combination of thermal stability, chemical resistance, and dimensional precision.
Its controlled manufacturing under ISO 9001 and ISO 13485 and international certifications (EN 45545-2, UL94, EC 1935/2004, FDA) guarantee performance and reliability in critical environments.
A high-performance industrial solution designed for applications where durability, purity, and safety are essential.
Una solución de alto rendimiento industrial diseñada para aplicaciones donde la durabilidad y la seguridad son esenciales.
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