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Description for Dow Silastic TR-70
High mechanical properties; very high tear strength; high modulus; wide service temperature range.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 |