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Polytek / Material reference
Silicone

PlatSil® HTS-25 Silicone Rubber

PlatSil® HTS-25 Silicone Rubber is listed by Polytek as a silicone rubber. The source reports mixed viscosity of 15,500 cP, mix ratio by weight of 1A:10B. This record connects 13 reported fields with 3 manufacturer document links. Review the original technical data sheet for the applicable test conditions and processing instructions.

Technical data sheet Safety data sheet
15,500 cPManufacturer-reported
1A:10BManufacturer-reported
1.11Manufacturer-reported
645 psiManufacturer-reported

Technical & safety documents

3 links
Files open on the manufacturer's document host. Region and language follow the source listing; confirm the revision inside the file.
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TDS
PlatSil® HTS-25 Silicone Rubber — Technical BulletinEnglish · Not specified
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SDS
PlatSil® HTS-25 Silicone Rubber — Safety Data Sheet - Part AEnglish · Not specified
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SDS
PlatSil® HTS-25 Silicone Rubber — Safety Data Sheet - Part BEnglish · Not specified
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Reported specifications

13 fields
Material and processing data
PropertyReported valueEvidence
Mix Ratio by Weight1A:10BManufacturer table
Shore HardnessA25Manufacturer table
Pour Time70 min.Manufacturer table
Demold Time24 hr.Manufacturer table
Cured ColorMilky WhiteManufacturer table
Mixed Viscosity15,500 cPManufacturer table
Specific Volume24.9 in³/lbManufacturer table
Specific Gravity1.11Manufacturer table
Elongation2,000 %Manufacturer table
Tensile Strength645 psiManufacturer table
Die B Tear Strength179 pliManufacturer table
Die T Tear Strength67 pliManufacturer table
Cure InhibitionContamination 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.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:10B. 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.

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