High-Precision Medical Grade Liquid Silicone Rubber for Silicone Valves with Excellent Sealing Performance
Product Overview
Medical Grade Liquid Silicone Rubber (LSR) 6250-50YH is specifically engineered for manufacturing high-performance silicone valves, including medical valves, one-way valves, and precision flow-control components. This material combines excellent elasticity, mechanical strength, and dimensional stability, ensuring reliable performance in critical sealing and flow regulation applications.
Silicone valves require materials with high resilience, low deformation, and consistent recovery performance. With a Shore A hardness of 50, RH6250-50YH delivers an optimal balance between flexibility and structural integrity, allowing valves to maintain precise functionality over repeated cycles.
Key Features
Medical-grade platinum-cured silicone
Excellent resilience and recovery performance
High tear strength for repeated actuation
Low tensile set for long-term sealing stability
Good dimensional stability and shrinkage control
Suitable for precision LSR injection molding
Typical Technical Data
| Property | Unit | Value |
|---|---|---|
| Appearance | / | Transparent |
| Viscosity | Pa·s | 1.2 × 10⁶ |
| Hardness | Shore A | 50 |
| Density | g/cm³ | 1.10 |
| Resilience | % | 60 |
| Tensile Strength | MPa | 8 |
| Elongation at Break | % | 550 |
| Tear Strength | kN/m | 30 |
| Tensile Set | % | 1.7 |
| Linear Shrinkage | % | 2.6 |
Product Advantages
Reliable Sealing Performance
Low tensile set (1.7%) ensures minimal deformation, maintaining long-term sealing integrity in valve applications.
High Fatigue Resistance
Excellent resilience and elongation allow valves to withstand repeated opening and closing cycles without failure.
Precision Molding Capability
Controlled viscosity and shrinkage enable accurate production of complex valve geometries.
Enhanced Durability
High tear strength (30 kN/m) improves resistance to mechanical stress and prolongs service life.
Applications
Medical silicone valves
One-way valves
Air and fluid control valves
Pump valve components
Precision flow control parts
Packaging
20 kg pails
200 kg drums
Store in a cool and dry place. Shelf life: 12 months.
About Ruihe New Material
Guangzhou Ruihe New Material Technology Co., Ltd is a professional manufacturer specializing in liquid silicone rubber (LSR) and solid silicone rubber (HCR). Our medical-grade silicone materials are widely applied in medical devices, baby care products, precision components, and industrial applications.
With advanced production technology and strict quality control, Ruihe provides reliable and customized silicone solutions for global customers.
FAQ
Q1: Why is LSR suitable for silicone valves?
Because of its excellent elasticity, resilience, and durability, LSR ensures stable valve performance under repeated operation.
Q2: What hardness is ideal for silicone valves?
Shore A 40–60 is commonly used. 6250-50YH offers a balanced performance for most valve applications.
Q3: Can this material handle repeated deformation?
Yes, it has high resilience and elongation, making it ideal for cyclic use.
Q4: Is it suitable for precision molding?
Yes, it is optimized for LSR injection molding and supports complex designs.
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.