Dow Silastic TR-70 Datasheet Dow Silastic TR-70

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  • Description for Dow Silastic TR-70

    High mechanical properties; very high tear strength; high modulus; wide service temperature range.

    *See Terms of Use Below

    Brand Silastic
    Application Type Mold-Making
    1 Part or 2 Part 1 Part
    Material Form Rubber-Crepe
    Manufacturer Dow
    Chemistry Silicone rubber
    Cure Method Pressure Sensitive, Heat
    Cure Temperature (°C) 171
    Cure Time (min) 10
    Color Nearly transparent
    Key Specifications FDA (U.S. Food & Drug Administration) and/or CFIA (Canadian Food Inspection Agency): FDA 21 CFR 177.2600
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Cure Temperature Test Methods
Cure Temperature Cure Time Test Method
171°C Press cure
Cure Time Test Methods
Cure Time Test Method
10 min Press cure
Tear Strength Test Methods
Tear Strength Test Method
Very High
290 (ppi) ASTM D624
Tensile Strength Test Methods
Tensile Strength Cure Time Cure Temperature Test Method
1,255 psi ASTM D412
1,090 psi 4,200 min 200°C ASTM D412, Heat aged, 70 hours at 200°C (392°F)
Elongation Test Methods
Elongation Test Method
540 % ASTM D412
390 % ASTM D412, Heat aged, 70 hours at 200°C (392°F)
Modulus Test Methods
Modulus Test Method
High Modulus Test Method
575 psi ASTM D412, at 100% elongation
630 psi ASTM D412, at 100% elongation, Heat aged, 70 hours at 200°C (392°F)
Shore A Hardness Test Methods
Shore A Hardness Shore Hardness Test Method Hardness Temperature
73 Hardness/Durometer Test Method 200°C
76 ASTM D2240
Specific Gravity Test Methods
Specific Gravity Test Method
1.200 ASTM D792