LiquaCast® Long-Life is Castaldo's yellow, 0% shrinkage RTV liquid molding rubber engineered for extended mold life, added strength, added tear resistance, and a firmer feel. The firmer durometer helps maintain delicate detail during wax injection—ideal for thin filigree, fine channels, difficult undercuts, spirals, and CAD-CAM resin or wax patterns.
Features
- 0% shrinkage for dimensional consistency of patterns and castings.
- Firmer, tougher rubber for durability and tear resistance through repeated use.
- Low viscosity for easy measuring, mixing, vacuuming, and pouring.
- Easy 1:1 mix ratio by weight or volume—simple, reliable processing.
- Designed to resist softening or degradation when molds are stored properly over time.
- Compatible with most CAD-CAM resins and waxes; use a barrier coat if required (see Notes).
Specifications
| Total Kit Weight |
2.2 lb (1 kg) |
| Color |
Yellow |
| Shrinkage |
0% |
| Mix Ratio |
1:1 (Part A : Part B) by weight or volume |
| Working Time (Pot Life) |
Approx. 45–60 minutes at 77°F (25°C) |
| Room-Temperature Cure |
16–24 hours at 77°F (25°C); longer cure improves mold quality |
| Accelerated Cure |
90–120 minutes at 150°F (60–65°C) |
| Vacuuming |
~5 minutes; expect temporary rise and collapse of 300–400% during degassing |
| Storage Life (Unopened) |
At least 6 months in a cool, dry place |
| Rubber Type |
Non-silicone RTV (follow specific Castaldo procedures) |
What's Included
- Castaldo LiquaCast® Long-Life Part A
- Castaldo LiquaCast® Long-Life Part B
- Total net contents: 2.2 lb (1 kg); mix 1:1
Compatibility
- Jewelry and small-parts molds requiring high detail retention, especially thin filigree and fine-channel designs.
- Most CAD-CAM printed resins and wax patterns; for certain resins, use a barrier coat and/or mold release (see Notes).
- Works with vacuum degassing. If no vacuum pump is available, pressure curing in an empty (unheated) wax injector pot is an alternative.
Notes
- Store finished molds in airtight containers away from heat and light; do not store in contact with molds made from other rubber types.
- Some resins may soften or adhere; use a barrier coating (e.g., PVA, spray paint, or Castaldo resin release) and then apply release spray as needed.
- Avoid moisture contamination; do not mix in paper cups or with wooden tools.
- Use gloves and eye protection; ensure adequate ventilation. See SDS and product labels for full safety guidance.
California Prop 65 Warning: