Shin-Etsu SES22251 Addition Cure Mold Making Silicone

Description

SES22251 silicone is a Shin-Etsu addition cure mold making material for prototype, production, and casting teams that need a high strength silicone base with easy release. The base can be paired with selected CAT22251 catalysts to tune durometer for the mold detail in front of the shop.

SES22251 silicone Benefits

• Addition cure chemistry supports mold making work that needs controlled cure and dimensional stability.
• High strength and high modulus properties help molds hold shape around demanding parts.
• Low shrinkage supports better part repeatability when molds are used for casting or prototype runs.
• Easy release helps reduce part damage during demolding, especially around detailed shapes.
• Multiple catalyst options let teams select a durometer range instead of changing the base material.

This material is a fit for mold rooms that need a dependable silicone base for prototypes, small production runs, and detailed casting patterns. It is especially useful when the same base inventory must support more than one mold hardness.

Where SES22251 silicone Fits

• Prototype molds for consumer product, medical, and transportation components.
• Casting molds with undercuts or detail that need tear resistance during release.
• Small production tooling where low shrinkage matters to finished part fit.
• Mold shops testing catalyst options for different hardness targets.
• Repair or replacement molds where release and detail capture are important.

Surface Preparation and Use

Use clean mold boxes, dry masters, and compatible release systems before mixing. Measure base and catalyst according to the current Shin-Etsu data sheet. Mix thoroughly without whipping in excess air, then degas or handle bubbles according to the shop process.

Run a test pour before using the material on a critical master. Some surfaces, contaminants, or residues can inhibit addition cure silicones, so confirm compatibility before scaling. For related products, browse Chemical Concepts molding materials.

Technical Details and Documentation

Shin-Etsu identifies SES22251/CAT22251 systems as high strength, high modulus addition cure mold making silicones with low shrinkage and easy release. For current manufacturer context, review Shin-Etsu Silicone before production use.

For help selecting catalyst, durometer, or mold process, call (800) 220-1966 or email [email protected].