RTV-2 Silicone Material Selection Guide

Learn how to choose the right silicone based on hardness, viscosity, curing system, and application needs.

Choosing the right RTV-2 silicone is the most important step in mold making. The wrong hardness, viscosity, or curing system can lead to bubbles, tearing, or poor mold performance.

This guide will help you understand how to select the best silicone for your specific application, whether you are working with resin, concrete, or industrial molds.

Key Factors in Silicone Selection

Dureza Shore A

Soft silicones (10–20A) are ideal for detailed molds and easy demolding. Medium hardness (20–30A) is suitable for general-purpose molds, while higher hardness (30–40A) provides better stability for large molds.

Viscosidade

Low viscosity silicone flows easily and captures fine details, while higher viscosity systems are better for thicker molds and vertical applications.

Cure System

Tin-cure silicone is cost-effective and widely used, while platinum-cure silicone offers better durability, lower shrinkage, and higher precision.

Application-Based Selection

RTV2-SILICONE-FOR-CONCRETE-MOLDS (1)

Concrete Molds

Concrete molds require higher hardness and strong tear resistance to handle weight and repeated use.

silicone para fabricação de moldes de resina

Resin Molds

Low viscosity and medium hardness silicone are commonly used for resin casting to capture fine details.

molde de silicone para rosa para sabonete (1)

Soap Molds

Soft silicone is preferred for flexible molds and easy demolding.

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Topsil Silicone

Why Choose Topsil Silicone?

Professional RTV-2 silicone supplier with a wide range of hardness and viscosity options.

Strong application-based selection support for resin, concrete, and industrial mold making.

Custom silicone solutions tailored to different production requirements.

Reliable global supply for consistent material sourcing and production planning.

Material Selection Guide Overview

RTV-2 silicone material selection depends on hardness, viscosity, curing system, and application requirements. Understanding these factors can significantly improve mold quality and production efficiency.

This guide supports manufacturers and mold makers working with resin, concrete, and industrial applications to choose the most suitable silicone system.

Need Help Choosing the Right Silicone?

Contact our technical team for professional silicone recommendations based on your application.

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