ML Clear 40 is a high-performance, two-component addition-cure silicone elastomer engineered for precision mould making and casting applications. Renowned for its exceptional detail reproduction and mechanical resilience, it is widely utilised in industries such as prototyping, and model making.

Key Features

• Medium Hardness (Shore A 40): Provides a balanced combination of flexibility and structural integrity, making it suitable for a variety of moulding tasks.​

• Low Viscosity: Ensures easy mixing and pouring, facilitating the capture of intricate details in moulds .​

• Minimal Shrinkage: Linear shrinkage is less than 0.1%, ensuring dimensional stability of the final product.​

• Transparent Appearance: Allows for visual inspection during the casting process.​

• Room Temperature Vulcanization: Cures at ambient temperatures within 24 hours, with a pot life of approximately 90 minutes .​

Applications

ML CLEAR 40 is ideal for creating moulds used in casting a variety of materials, including:​

• Polyurethane resins

• Epoxy resins

• Polyester resins

• Wax

• Polyurethane foams

Its properties make it particularly suitable for applications requiring high fidelity and durability.

Best Practises

• Mixing Ratio: Combine components A and B in a 1:1 ratio by weight.​

• Mixing: Stir both components thoroughly before mixing to ensure uniformity. Mix until the compound is homogeneous.​

• Degassing: For optimal results, degas the mixture under vacuum to eliminate air bubbles before casting.​

• Curing Conditions: Allow the silicone to cure at room temperature (20–25°C) for at least 24 hours. Demoulding can typically occur after 6 HOURS

• Storage: Store unopened containers in a cool, dry place below 30°C. Shelf life is approximately 12 months under proper storage conditions .​