Medical Grade Liquid Silicone Rubber (LSR) 6250-60YH for Negative Pressure Ball
Product Overview
LSR 6250-60YH is a two-component, platinum-cured medical grade liquid silicone rubber developed for medical parts that require reliable softness, elasticity, and long-term stability. It is especially suitable for producing vacuum suction bulbs (negative pressure bulbs / bulb syringes) where consistent sealing, repeated squeezing, and clean appearance are important.
Key Applications
Vacuum suction bulb / negative pressure bulb (bulb syringe, suction bulb)
Medical squeezing bulbs, pump bulb components
Medical silicone parts that need stable recovery and durability
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Key Features (Characteristics)
Medical-grade positioning with biocompatibility testing support (ISO 10993-oriented projects)
High transparency appearance for clean-looking medical parts
High strength + good resilience for repeated squeezing cycles
Low deformation tendency to help maintain shape and sealing performance
Yellowing resistance & aging resistance for long-term appearance stability
Stable processing window (pot life available for production planning; temperature affects pot life)
Typical Specification (6250-60YH, A/B)
Typical values for reference; actual results may vary with process, tooling, and curing conditions.
| Item | Value |
|---|---|
| Product Type | Two-component LSR (A/B) |
| Appearance | Transparent |
| Viscosity | 2000 Pa·s |
| Hardness | Shore A 57 |
| Density | 1.12 g/cm³ |
| Resilience | 60% |
| Tensile Strength | 11 MPa |
| Elongation at Break | 600% |
| Tear Strength | 40 kN/m |
| Tensile Set | 1.7% |
| Linear Shrinkage | 2.5% |
Performance Advantages for Vacuum Suction Bulb Production
Comfortable hand-feel + reliable rebound: hardness and resilience support repeated squeezing without “soft collapse.”
Lower risk of edge tearing: higher tear strength helps reduce tearing during demolding, trimming, or assembly.
Stable sealing behavior: low tensile set helps maintain recovery and sealing force over time.
Cleaner appearance: transparency + yellowing resistance reduce cosmetic complaints in long-term storage/use.
Easier quality control: measurable parameters help you set incoming inspection standards (hardness, viscosity, tear strength, tensile set).
Processing & Handling Notes (Practical)
Mix A/B components evenly before molding.
Avoid contact with substances containing N / P / S / Sn / Pb, which may affect platinum-catalyzed curing.
Store in a cool, dry place away from direct sunlight; follow shelf-life guidance for best performance.
Packaging
20 kg pails
200 kg drums
(Other packaging can be discussed based on your shipment and production needs.)
Why Choose GUANGZHOU RUIHE NEW MATERIAL TECHNOLOGY CO.,LTD
We focus on silicone material development and manufacturing, providing stable supply and technical support for medical silicone applications. For vacuum suction bulb projects, we can recommend matching grades, support sampling, and help align key parameters with your mold design and production process.
Contact
Tel: 86 13421773611
Whatsapp/Wechat: 86 13421773611
Email: wendy@ruihesilica.com
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.