Description
Shin-Etsu SES22251/CAT22251-40 mold making silicone is a CAT22251-40 silicone system for high strength, high modulus addition cure mold work. The SES22251 base can be paired with different catalysts in the family, and the CAT22251-40 version is selected where shops need a firmer mold rubber with tear resistance, low shrinkage, and easy release.
CAT22251-40 Silicone Benefits
- Addition cure chemistry supports accurate mold reproduction when the base and catalyst are mixed correctly.
- High modulus cured rubber helps the mold hold shape under repeated casting and demolding cycles.
- Excellent tear resistance is useful around undercuts, fine detail, and narrow mold edges.
- Low shrinkage helps preserve part size and detail from the original pattern.
- Easy release behavior helps reduce casting damage and cleaning time between pulls.
Use this material for production molds, prototype molds, and detailed casting work where the mold must keep its geometry. Prepare the master pattern, weigh or meter the components consistently, mix until uniform, and prove cure and release on a small area before committing a full mold.
Common Applications for CAT22251-40 Silicone
- Mold making for cast parts with fine detail and repeat pulls.
- Architectural, decorative, prototype, and general manufacturing molds.
- Patterns with undercuts where tear strength matters during demolding.
- Production mold sets that need a firmer silicone option from the SES22251 family.
- Shops comparing catalyst options to reach a specific cured hardness range.
Compatible Casting and Mold Work
- Rigid patterns that can accept an addition cure silicone process.
- Cast stone, resin, wax, and prototype casting workflows after compatibility checks.
- Mold boxes and tools set up for accurate weighing, mixing, degassing, and pour control.
- Applications where a high modulus mold rubber is preferred over a softer grade.
CAT22251-40 Silicone Technical Specifications
| Property | Value |
|---|---|
| SKU | SHI-CAT22251-40 |
| Manufacturer family | Shin-Etsu SES22251/CAT22251 |
| Product type | Addition cure mold making silicone |
| Catalyst version | CAT22251-40 |
| Cured profile | High strength, high modulus |
| Key properties | Tear resistance, low shrinkage, easy release |
| Use case | Production and prototype mold making |
Packaging and Ordering
Order this catalyst version when your mold design needs a firmer addition cure silicone from the SES22251 system. Browse Chemical Concepts molding materials for related mold rubbers and casting supplies, and review broader silicone product information from Shin-Etsu Silicone.
Need Help?
If you need help matching catalyst hardness, mold detail, or demolding conditions, call (800) 220-1966 or email [email protected].
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