SILISIL MF-Dura 30 – High-precision, dimensionally stable silicone for industrial molds and concrete castings
SILISIL MF-Dura 30 is a high-performance, addition-curing 2-component silicone (RTV-2) that has been specially developed for demanding industrial molding processes. With a Shore A hardness of approx. 30, high mechanical strength, and excellent reproduction accuracy, this material is particularly suitable for concrete molds, model making, and molds with complex geometries or severe undercuts.
The green, pourable silicone offers excellent dimensional stability and high tear and break resistance. It is easy to process in a 1:1 mixing ratio by weight and vulcanizes at room temperature within approx. 4 hours. The viscosity of 5,000 mPa·s enables bubble-free casting, ideally supported by vacuum venting.
Thanks to its temperature resistance from –40 °C to +200 °C and its long service life, SILISIL MF-Dura 30 is the ideal choice for molds that are used multiple times or exposed to high mechanical loads.
product features
- Addition-curing 2K silicone (RTV-2)
- Shore A hardness approx. 30
- Tensile strength > 5 N/mm²
- Elongation at break approx. 450%
- Tensile strength 15 N/mm
- Viscosity: 5,000 mPa·s
- Pot life approx. 50 minutes
- Demolding time approx. 4 hours
- Final curing after approx. 24 hours
- Temperature resistance: –40 °C to +200 °C
- Color: Green
- Mixing ratio 1:1 by weight
Suitable materials
- concrete
- plaster
- synthetic resins
- polyurethanes
- waxes
Typical areas of application
- Mold making for jewelry, artificial stones, model making
- Manufacture of concrete molds and decorative elements
- Series production of complex casting molds
- Replication of delicate structures with high dimensional accuracy
Processing instructions
- Thoroughly clean surfaces (dry, free of grease and dust)
- Stir components well before use.
- Mix the base and catalyst in a precise 1:1 ratio.
- Ideally, vent the mixture under vacuum.
- Slowly pour the silicone from a height of approx. 30 cm.
- Demolding possible after approx. 4 hours, complete curing after 24 hours
