Polytek Platsil FS-20 Gallon kit (16lb)

$310.00
Availability: Out of stock

PlatSil® FS-20 (Fast-Setting) Silicone Rubber is a two-part, platinum-catalyzed, liquid silicone system that cures (RTV) to a milky white, Shore OO66/A20 rubber. This product offers a simple 1A:1B mix ratio (by weight or volume), a fast demold time of ~25 minutes, and a long pour time (~8 minutes) relative to its cure speed. This allows for fast turn-around of molds and parts with sufficient time to mix and pour. Heat can be used to further accelerate the cure. 

This is a pourable rubber, but it can be easily thickened with PlatThix Liquid Thickener or Fumed Silica for brush-on application.

Mix Ratio                 Shore Hardness    Pour Time Cured Color Mixed Viscosity Specific Volume Demold Time Shrinkage Upon Cure 

1A:1B by wt/vol       OO66/A20           8 min.    Milky White     3,800 cP        24.9 in³/lb             25 min.               Nil

Notes: Contamination from sulfur (e.g., sulfur-based clay), amines, tin compounds, cured polyester resin, some paints and some silicone rubbers may inhibit surface cure of platinum-cured rubbers. For additional physical property specifications, refer to the Physical Properties Bulletin.

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