Description
PlatSil® 73-20 Silicone Rubber is a two-part, platinum-catalyzed, liquid silicone system that cures (RTV) to a blue translucent, Shore A20 rubber. Compared to other silicones in the PlatSil® 73-Series line, this option sets quickly with a demold time of 1 hour (at room temperature). The transparency of PlatSil® 73-20 is useful for molds that need to be cut after cure – parting lines can be better determined because the model is visible. This is a pourable rubber, but it can be easily thickened with PlatThix Liquid Thickener or Fumed Silica for brush-on application.
FOR INDUSTRIAL/PROFESSIONAL USE ONLY.
Technical Specifications Mix Ratio by Weight:1A:1B Shore Hardness:A22 Pour Time:5 min. Demold Time:1 hr. Cured Color:Blue, Translucent Mixed Viscosity:3,000 cP Specific Volume:25 in³/lb Specific Gravity:1.1 Elongation:460 % Tensile Strength:230 psi Die B Tear Strength:45 pli Die T Tear Strength:17 pli Cure Inhibition: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. Kit Components
| PlatSil® 73-20 | Components |
|---|---|
| 2-lb kit includes: | 1 lb of PlatSil® 73-20 Part A (~1 pint) 1 lb of PlatSil® 73-20 Part B (~1 pint) |
| 16-lb kit includes: | 8 lb of PlatSil® 73-20 Part A (~1 gallon) 8 lb of PlatSil® 73-20 Part B (~1 gallon) |
| 80-lb kit includes: | 40 lb of PlatSil® 73-20 Part A (~5 gallons) 40 lb of PlatSil® 73-20 Part B (~5 gallons) |
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