SILASTIC™ RTV-4251-S2 Base and Curing Agent is a high strength, lower durometer silicone rubber suited for many moldmaking applications. It is recommended for use with plaster, cement and rigid polyurethane and can be used with polyesters.
Features:- Outstanding release properties
- Low viscosity allowing easy mixing and degassing
- Fast thick section cure at room temperature
- If required the product cure can be heat accelerated
- Medium hardness
- High tear resistance
- Very high elasticity, for easy removal of complex replica parts
- Very low shrinkage and good dimensional stability
- Can be used for high temperature casting applications
- Can be made thixotropic (nonflowable) for vertical surface replication
Typical Properties:- Mixing Viscosity: 9000 Centipoise
- Approximate De-mold Time: 6 to 8 hrs
- Color: Off-White
- Cure Type: Addition Cure
- Durometer - Shore A: 20 Shore A
- Elongation: 600 %
- Number of Parts: Two
- Polyesters: Yes
- Specific Gravity @ 25°C: 1.13
- Tear Strength: 130 ppi
- Tensile Strength: 910 psi
- Type: Kit
- Working Time: 60 Minutes
