Shin-Etsu CAT22251-20 Silicone Catalyst, 20 kg Pail, Catalyst Only

Description

Shin-Etsu CAT22251-20 is a silicone catalyst supplied as the catalyst-only side of a two-component Shin-Etsu silicone rubber system in a 20 kg pail. It is metered into the matched base compound to start cure, so the pair must be ordered and mixed together for the silicone to develop full properties.

Silicone Catalyst Benefits

• Catalyst-only pack lets shops reorder the curing component without buying a full kit.
• Two-component silicone rubber cures after the base and catalyst are combined at the specified ratio.
• Supports mold making, potting, and encapsulation work that uses the matched Shin-Etsu base.
• 20 kg pail size suits production runs and repeat pours.
• Backed by Shin-Etsu silicone chemistry known for heat resistance and dimensional stability.

Add this silicone catalyst to the correct base compound at the ratio in the manufacturer data sheet. Weigh both parts, mix to a uniform blend, and de-air before pouring so trapped air does not leave voids or weak spots. Cure time and temperature depend on the base and the ambient conditions, so test a representative pour before committing production parts.

Common Applications for This Silicone Catalyst

• Curing two-part silicone rubber for mold making and tooling.
• Potting and encapsulating electronic and electrical assemblies.
• Producing flexible silicone parts that need low shrinkage and clean release.
• Repeat production pours that consume the base faster than the catalyst.

Handling Notes

• Confirm the catalyst matches the specific base compound before use.
• Follow the labeled mix ratio, working time, and storage guidance.
• Keep the pail sealed and stored within the recommended temperature range.
• Wear appropriate protection and follow the safety data sheet.

Order the matched base and related supplies from Chemical Concepts molding materials. Review current product data from Shin-Etsu Silicone before qualifying a cure process.

Need Help?

Need help confirming which base this catalyst pairs with? Call (800) 220-1966 or email [email protected].