DOWSIL™ 4 Catalyst - Durable Silicone Rubber Curing Agent, 45g

DOWSIL™ 4 Catalyst: Durable Molds with Precision

DOWSIL™ 4 Catalyst is a high-performance silicone curing agent designed for use with liquid silicone rubber bases, enabling the creation of durable and flexible molds. Trusted across industries for its reliable curing process, this catalyst supports a wide range of applications including mold-making and electrical potting and encapsulation.

Features and Benefits

• Versatile Applications: Ideal for potting, encapsulating electrical/electronic components, and mold-making. Compatible with Dow 3110, 3112, and 3120 bases.
• Flexible Durability: Creates durable and flexible molds with excellent elongation properties of up to 175%.
• Fast Curing: Room temperature cure with mix ratios as low as 200:1. Cure times range from 20-30 minutes depending on the silicone base.
• High Performance: Supports service temperatures from -55°C to 300°C, ensuring reliability in extreme conditions.
• Precise Specifications: Offers excellent hardness (45-60 Shore A), tensile strength (up to 900 psi), and thermal conductivity for demanding applications.

Technical Information

• Mix Ratio: 200:1 (Base to Catalyst).
• Compatible Bases: Dow 3110, 3112, and 3120.
• Cure Times: 3110: 20 min, 3112: 20 min, 3120: 30 min.
• Hardness: 3110: 45 Shore A; 3112: 60 Shore A; 3120: 60 Shore A.
• Elongation: Up to 175%.
• Service Temperature: -55°C to 300°C (varies by base).

This product, originally branded as Dow Corning™, is now part of the trusted DOWSIL™ portfolio. Learn more about the Dow Corning name change and transition.

Product Sizes

• 45 g Tube - PN 4107697