SILASTIC T4 is a high strength moldmaking rubber developed for prototype design and production tooling, especially for rapid prototyping.
Translucent high strength silicone moldmaking rubber.
• Outstanding release properties If required the product cure can be heat accelerated
• Translucent appearance allows split lines to be cut accurately in block molds
• Very low shrinkage and good dimensional stability
• High hardness, but flexible and very tough
• Can be used for high temperature casting applications
• Easy to de-air
Base and Curing Agent mixture (100:10 by weight)
Mixed viscosity: 35,000 mPa.s
Working time at 23°C (73.4°F): 90 minutes
Curing time: 12 hours
Linear shrinkage: <0.1%
Cured for 24 hours at 23°C (73.4°F) with SILASTIC T4 Curing Agent
Hardness (Shore A): 40
Tensile strength: 6.7 MPa
Elongation at break: 400%
Tear strength: 27 N/mm
T4 is an Addition-Cure SIlicone. All addition-cured silicone elastomers are susceptible to cure inhibition when in contact with certain materials and chemicals. Inhibition has occurred if the elastomer is only partially cured after 12 hours, or has a sticky surface in contact with another material. Amines and sulphur containing materials are strong inhibitors, as are organo tin salts used in condensation cure silicone elastomers. It is strongly recommended that mixing containers, mold construction materials, originals and release agents be checked for any inhibition effect before use.
We may not keep all these products in stock, but can get them within 2-3 days. Please enquire if your requirement is urgent,