Liquid Silicone Rubber (LSR)

1. What Is Liquid Silicone Rubber (LSR)?

Liquid Silicone Rubber (LSR) is a two-part, platinum-cured silicone elastomer designed for injection molding. After precise mixing, it cures rapidly in heated molds. Key characteristics include:

• Exceptional purity and chemical inertness
• Wide temperature resistance
• Excellent elasticity and resilience
• Ideal for high-precision, automated mass production

The core value of LSR lies in:
High cleanliness, consistency, and manufacturing efficiency

2. Key Performance Advantages

3. Major Application Areas

1) Medical & Life Sciences

·         Tubing, diaphragms, seals

·         Respiratory masks, injection components

·         Implantable or short-term body-contact parts

2) Baby Care & Consumer Products

·         Nipples, pacifiers

·         Baby feeding products, teethers

·         Wearable health devices

3) Automotive & New Energy

·         Connector seals

·         Ignition coil seals

·         Battery pack waterproof components

4) Electronics & Electrical

·         Waterproof keypads

·         Insulation seals

·         LED encapsulation

4. LSR vs. Solid Silicone Rubber (HCR)

5. LSR Molding Process Essentials

• Precise A/B dosing and mixing
• Cold runner systems
• Heated molds for rapid curing
• Automatic demolding

Advantages:

• Typically no post-curing required
• No peroxide by-products
• Minimal scrap, excellent dimensional stability

6. Key Mechanical Properties

7. Common Issues & Failure Causes