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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 Heat, Pressure Sensitive 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 -
Technical Data for Dow Silastic TR-70
Overview
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Application Type
- Casting / Moldmaking - Mold-Making
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1 Part or 2 Part
- 1-Part
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Material Form
- Other - Rubber-Crepe
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Industry
- Industrial - Calendering, Extrusion, Sheeting, Tubing and profiles
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Chemistry
- Silicone - Silicone rubber
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Cure Method
- Pressure Sensitive (min) - Pressure Sensitive
- Heat
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Color
- Clear / Transparent - Nearly transparent
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Key Specifications
- FDA (U.S. Food & Drug Administration) and/or CFIA (Canadian Food Inspection Agency) : 177.2600 - FDA 21 CFR 177.2600
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Brand
- Silastic
Specifications
Cure Specs
Cure Temperature (°C) 171 Test Method Cure Time (min) 10 Test Method Bond Strength
General Bond Strength (psi) High Tear Strength (piw) Very High, 290 (ppi) Test Method Tensile Strength (psi) 1,255, 1,090 Test Method Hardness
Shore A Hardness 73, 76 Test Method Elongation (%) 540, 390 Test Method Modulus (psi) High, 575, 630 Test Method Other Properties
Specific Gravity 1.200 Test Method Business Information
Shelf Life Details When stored at or below 50°C (122°F) in the original unopened containers, this product has a usable life of 36 months from the date of production. Shelf Life Type from the date of production. Shelf Life (mon) 36 -
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Cure Time Test Methods
Cure Time | Test Method |
---|---|
10 min | Press cure |
Cure Temperature Test Methods
Cure Temperature | Cure Time Test Method |
---|---|
171°C | Press cure |
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) |
Tear Strength Test Methods
Tear Strength | Test Method |
---|---|
Very High | |
290 (ppi) | ASTM D624 |
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 |