PlatSil® FS-10 Platinum Cure Silicone Rubber
PlatSil® FS-10 is a fast-setting, platinum-cure silicone rubber designed for professional mould making applications where rapid turnaround is essential. This two-part RTV silicone features a simple 1:1 mix ratio by weight or volume, an approximately 8-minute working time and a de-mould time of around 25 minutes at room temperature.
Unlike many fast-curing silicones, PlatSil® FS-10 provides a generous working time relative to its cure speed, allowing sufficient time for mixing, pouring and vacuum degassing while still delivering exceptionally fast production cycles. Its low viscosity allows it to flow easily into fine details, making it suitable for highly detailed moulds, brush-on mould systems and complex geometries.
Once cured, PlatSil® FS-10 produces a milky white rubber with outstanding tear strength and durability. The platinum-cure system provides excellent dimensional stability with virtually no shrinkage, making it suitable for demanding production environments where accuracy and repeatability are important.
With tear strength approximately 25% higher than many comparable fast-set silicones, PlatSil® FS-10 is engineered for demanding mould making applications where durability and production efficiency are equally important.
Key Features
- Easy 1:1 mix ratio by weight or volume
- Fast de-mould time of approximately 25 minutes
- Long 8-minute working time relative to cure speed
- Low viscosity for easy pouring and excellent detail reproduction
- Suitable for vacuum degassing
- Outstanding tear strength for long-lasting moulds
- Virtually zero shrinkage during cure
- Can be thickened with Sil-Thix for brush-on mould applications
- Heat may be used to further accelerate curing
- Excellent release properties against many common casting materials
Typical Applications
- Special effects (SFX) mould making
- Theatrical and film production moulds
- Medical simulation props and training aids
- Brush-on blanket moulds for complex shapes
- Rapid prototyping and product development
- Architectural model production
- Automotive and industrial prototyping applications
- Fast-turnaround production mould making
Compatible Additives
PlatSil® FS-10 can be modified to suit specific project requirements using a range of additives:
- Sil-Thix – Thickens the silicone for brush-on mould making and vertical surfaces.
- Silicone Pigments – Colour the silicone for identification or special effects applications.
- PlatSil® Retarder – Extends working time when additional processing time is required.
- PlatSil® Accelerator – Decreases the pot-life and cure time of the silicone.
Available Sizes
- 1kg Kit
- 10kg Kit
- 80lb Kit
Important Information
As with all platinum-cure silicone systems, certain materials may inhibit cure. Contamination from sulfur-containing materials (including some sculpting clays), amines, tin compounds, cured polyester resins, certain paints and some silicone rubbers may cause inhibition. If compatibility is unknown, a small-scale test is recommended before commencing production.
Frequently Asked Questions
What is the difference between PlatSil® FS-10 and standard platinum cure silicones?
PlatSil® FS-10 is designed for fast production environments. It offers an approximately 25-minute demould time while still providing around 8 minutes of working time, allowing users to mix, pour and even vacuum degas before the silicone begins to cure.
Can PlatSil® FS-10 be used for brush-on moulds?
Yes. Although PlatSil® FS-10 is supplied as a pourable silicone, it can be thickened using Sil-Thix to create a brushable consistency for blanket moulds and complex vertical surfaces.
Can I vacuum degas PlatSil® FS-10?
Yes. The working time is generally sufficient for vacuum degassing prior to pouring, but conduct a test to ensure there is sufficient time in your work environment.
How long does PlatSil® FS-10 take to cure?
At approximately 23°C, PlatSil® FS-10 typically reaches de-mould strength in around 25 minutes. Cure times may vary depending on temperature, mass and environmental conditions. The Accelerator may be used to speed up the cure time. See TDS for details.
Can I colour PlatSil® FS-10?
Yes. Silicone pigments can be added to PlatSil® FS-10 to produce a wide range of colours for mould identification, special effects work or production applications.
What materials can be cast into PlatSil® FS-10 moulds?
PlatSil® FS-10 moulds are commonly used with polyurethane resins, epoxy resins, polyurethane elastomers, wax, plaster and other casting materials. A suitable release agent may be recommended depending on the casting material and application.
Does PlatSil® FS-10 shrink during cure?
No. As a platinum-cure silicone, PlatSil® FS-10 exhibits virtually no shrinkage during curing, helping to maintain excellent dimensional accuracy.
What can cause cure inhibition?
Some materials can interfere with the curing process of platinum-cure silicones. Common sources of inhibition include sulfur-containing clays, amines, tin compounds, cured polyester resins, certain paints and some silicone rubbers. If compatibility is uncertain, a small test should be performed before mould making.
Can I extend the working time?
Yes. PlatSil® Retarder can be added to increase the working time when additional time is required for large moulds, complex pours or vacuum degassing.
