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> Company Blog About Platinum-Cure vs Tin-Cure Silicone: How to Choose for Mold Making (B2B Guide)
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Platinum-Cure vs Tin-Cure Silicone: How to Choose for Mold Making (B2B Guide)

2026-10-13

Latest company news about Platinum-Cure vs Tin-Cure Silicone: How to Choose for Mold Making (B2B Guide)

Two Cure Systems Explained

Silicone mould-making rubbers come in two main chemistries: platinum-cure (addition-cure) and tin-cure (condensation-cure). Both are two-component, room-temperature-curing rubbers, but they differ in performance, precision and cost.

Comparison Table

FeaturePlatinum-CureTin-Cure
Mix ratio1:1100:2
Linear shrinkage≤0.1%≤0.2%
Dimensional precisionHigherGood
Mold lifeLongerStandard
CostHigherLower
Typical useHigh-precision, food-grade, long-run moldsCandle, soap, craft, concrete molds

How to Choose

  1. Precision and detail → platinum-cure;
  2. Long production runs → platinum-cure;
  3. Budget-sensitive craft molds → tin-cure;
  4. Food-contact safety → platinum-cure;
  5. Avoid platinum cure inhibition with clean tooling.

Frequently Asked Questions

Which is more accurate? Platinum-cure silicone shrinks less and reproduces finer detail.

Is tin-cure silicone cheaper? Generally yes, but with a shorter mold life.

Can I switch between them? Yes, but clean tooling thoroughly, as tin residues inhibit platinum cure.

Conclusion

Choose platinum-cure silicone for precision, durability and food-grade safety, and tin-cure silicone for economical craft moulds. Shenzhen Hanast New Materials offers both families for every mold-making need.

Units 1210-1211, Block B, Building 6, Hengda Fashion Valley, Dalang Street, Longhua District, Shenzhen, Guangdong Province, China E-mail: sales11@hanastsilicone.com Tel: +8613670122311 Tel: +8613670122311
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