Liquid Silicone Rubber (LSR) has become one of the most popular materials for mold making across various industries. Whether you are creating detailed prototypes, casting resin crafts, making candle molds, or producing industrial parts, our LSR offers unmatched performance and reliability. Its high tear strength, excellent flexibility, and user-friendly operation make it a top choice for both beginners and professionals.

What Is Liquid Silicone Rubber?

Liquid Silicone Rubber is a two-component, platinum-cured silicone material that cures at room temperature or with slight heating. It is known for its smooth flowability, precise detail reproduction, and stable physical properties. Once cured, the silicone mold becomes soft, flexible, and resistant to deformation.

Key Benefits of Using LSR for Mold Making

1. High Tear Strength

One of the biggest advantages of LSR is its exceptional tear resistance. This ensures:

• Longer mold life

• Reduced risk of tearing when demolding complex shapes

• Better durability for repetitive casting

This makes LSR especially suitable for molds with deep undercuts, intricate patterns, or sharp edges.

2. Excellent Flexibility & Elasticity

LSR maintains elasticity even after long-term use. The cured silicone can stretch and bend without losing shape, allowing easy removal of cast parts without damaging the mold.

3. Easy to Use & Highly Stable

LSR is designed for simple operation:

• Mix Part A and Part B (usually 1:1 ratio)

• Pour into the prepared mold frame

• Allow it to cure naturally

No complicated equipment is required. After curing, the material maintains its stability even under varying temperatures and environmental conditions.

4. High Detail Reproduction

The low viscosity of LSR ensures that the material flows smoothly into small gaps. This results in molds that capture fine details such as textures, patterns, logos, or even fingerprints, making it ideal for:

• Resin art

• Candle molds

• Figurines

• Industrial prototype parts

5. Safe and Odorless

Many LSR products are food-grade or skin-safe (depending on formulation), making them suitable for molds related to baking, chocolate, body casting, and cosmetic applications.

Applications of Liquid Silicone Rubber in Mold Making

Liquid silicone rubber is widely used in:

• Crafts & DIY resin molds

• Candle and soap molds

• Prototyping and industrial parts

• Jewelry molds

• Food-grade molds (chocolate, fondant, cake)

• Medical model molds

• Cultural and architectural restoration

Its versatility allows it to adapt to professional manufacturing as well as small-scale creative projects.

Why Choose Liquid Silicone Rubber?

Compared with traditional mold materials such as latex or polyurethane rubber, LSR provides superior durability, heat resistance, and long-term flexibility. Users can rely on it for high-precision mold making with minimal shrinkage and consistent performance.

If you have any questions or need to place an order, please feel free to contact us at any time！