Smooth-On / Material reference
SiliconeMold Star™ 40T
Mold Star™ 40T is listed by Smooth-On as a platinum-cure silicone rubber. The source reports mixed viscosity of 11,000 cps, mix ratio by weight of 1A:1B, pot life of 20 minutes. This record connects 17 reported fields with 19 manufacturer document links. Review the original technical data sheet for the applicable test conditions and processing instructions.
11,000 cpsManufacturer-reported
1A:1BManufacturer-reported
20 minutesManufacturer-reported
3 hoursManufacturer-reported
40Manufacturer-reported
1.12 g/ccManufacturer-reported
Technical & safety documents
19 linksFiles open on the manufacturer's document host. Region and language follow the source listing; confirm the revision inside the file.
Technical BulletinEnglish · Not specified
Open file Skin Safety CertificationEnglish · Not specified
Open file Mold Star 40T SDS | EnglishEnglish · United States & Canada
Open file Mold Star 40T SDS | SpanishSpanish · United States & Canada
Open file Mold Star 40T SDS | FrenchFrench · United States & Canada
Open file Mold Star 40T SDS | EnglishEnglish · South & Central America
Open file Mold Star 40T SDS | SpanishSpanish · South & Central America
Open file Mold Star 40T SDS | EnglishEnglish · United Kingdom & European Union
Open file Mold Star 40T SDS | SpanishSpanish · United Kingdom & European Union
Open file Mold Star 40T SDS | FrenchFrench · United Kingdom & European Union
Open file Mold Star 40T SDS | GermanGerman · United Kingdom & European Union
Open file Mold Star 40T SDS | ItalianItalian · United Kingdom & European Union
Open file Mold Star 40T SDS | GreekGreek · United Kingdom & European Union
Open file Mold Star 40T SDS | DutchDutch · United Kingdom & European Union
Open file Mold Star 40T SDS | PolishPolish · United Kingdom & European Union
Open file Mold Star 40T SDS | CzechCzech · United Kingdom & European Union
Open file Mold Star 40T SDS | HungarianHungarian · United Kingdom & European Union
Open file Mold Star 40T SDS | NorwegianNorwegian · United Kingdom & European Union
Open file Mold Star 40T SDS | EnglishEnglish · Australia & New Zealand
Open file Reported specifications
17 fieldsMaterial and processing data
| Property | Reported value | Evidence |
|---|---|---|
| Mixed Viscosity | 11,000 cps | Manufacturer table |
| Catalyst | Platinum | Manufacturer table |
| Color | Translucent | Manufacturer table |
| Mix Ratio By Volume | 1A:1B | Manufacturer table |
| Mix Ratio By Weight | 1A:1B | Manufacturer table |
| Pot Life | 20 minutes | Manufacturer table |
| Cure Time | 3 hours | Manufacturer table |
| Shore A Hardness | 40 | Manufacturer table |
| Specific Gravity | 1.12 g/cc | Manufacturer table |
| Specific Volume | 24.7 cu. in./lb. | Manufacturer table |
| Die B Tear Strength | 140 pli | Manufacturer table |
| Elongation @ Break | 500 % | Manufacturer table |
| 100% Modulus | 108 psi | Manufacturer table |
| Shrinkage | <.001 in./in. | Manufacturer table |
| Tensile Strength | 656 psi | Manufacturer table |
| Useful Temperature (min) | -65 °F | Manufacturer table |
| Useful Temperature (max) | 450 °F | Manufacturer table |
Reported values are not independent test results. Original units and table wording are preserved. Extracted TDS rows can depend on the grade, component and source table headings; use the linked page to verify that context. Test methods, sample preparation and cure schedules may differ; consult the original TDS before making a performance comparison.
Selection & processing checks
Check the exact cure chemistry and intended substrate. Silicone rubber and silicone resin are distinct material types; this collection includes elastomers.
- Is the material addition-cure, condensation-cure or a one-part system?
- Which substrates and cure-inhibition precautions are listed?
- Are the reported tear strength and elongation measured under comparable conditions?
- Confirm the complete product designation, including any hardener, color or formulation suffix.
- Read the current SDS for handling, protective equipment, storage and disposal information.
The reported weight ratio for this record is 1A:1B. A weight ratio must not be used as a volume ratio without the appropriate density information.
Missing properties are not estimated. Similar values or shared application labels do not establish a drop-in replacement.
Other materials in this family
View collection| Material / manufacturer | Family | Key specification | Documents | Add to comparison |
|---|---|---|---|---|
| 20-1615 | Silicone | 6,000 | 3 linked | |
| PlatSil® 73-60 Silicone Rubber | Silicone | 40,000 cP | 3 linked | |
| PlatSil® 73-25 Silicone Rubber | Silicone | 6,000 cP | 2 linked | |
| PlatSil® Gel-10 | Silicone | 15,000 cP | 2 linked |