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Smooth-On / Material reference
Polyurethane

Clear Flex™ 50

Clear Flex™ 50 is listed by Smooth-On as a polyurethane rubber. The source reports mixed viscosity of 250 cps, mix ratio by weight of 1A:2B, pot life of 25 minutes. This record connects 14 reported fields with 2 manufacturer document links. Review the original technical data sheet for the applicable test conditions and processing instructions.

Technical data sheet Safety data sheet
250 cpsManufacturer-reported
1A:2BManufacturer-reported
25 minutesManufacturer-reported
16 hoursManufacturer-reported
50Manufacturer-reported
1.04 g/ccManufacturer-reported

Technical & safety documents

2 links
Files open on the manufacturer's document host. Region and language follow the source listing; confirm the revision inside the file.
Open original PDF
TDS
Technical BulletinEnglish · Not specified
Open file
SDS
Clear Flex 50 SDS | EnglishEnglish · United States & Canada
Open file

Reported specifications

14 fields
Material and processing data
PropertyReported valueEvidence
Mixed Viscosity250 cpsManufacturer table
ColorClearManufacturer table
Mix Ratio By Weight1A:2BManufacturer table
Pot Life25 minutesManufacturer table
Cure Time16 hoursManufacturer table
Shore A Hardness50Manufacturer table
Specific Gravity1.04 g/ccManufacturer table
Specific Volume26.8 cu. in./lb.Manufacturer table
Die C Tear Strength25 pliManufacturer table
Elongation @ Break500 %Manufacturer table
Index of Refraction at 20°C1.48822Manufacturer table
Index of Refraction at 25°C1.48649Manufacturer table
Shrinkage0.0015 in./in.Manufacturer table
Tensile Strength250 psiManufacturer 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

Distinguish rigid casting plastics, elastomeric rubbers and foams. Their density, hardness scales and processing requirements are not interchangeable.

  • Is this a solid material or an expanding foam?
  • Which hardness scale and cure conditions are reported?
  • What moisture-control and preparation steps does the manufacturer require?
  • 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:2B. 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 / manufacturerFamilyKey specificationDocumentsAdd to comparison
Compat™ 45Smooth-OnPolyurethane2,600 cpsMixed Viscosity15 linked
EZ-Mix™ 40Smooth-OnPolyurethaneBrushableMixed Viscosity2 linked
Formlastic™ 48Smooth-OnPolyurethane3,000 cpsMixed Viscosity2 linked
Formlastic™ 60Smooth-OnPolyurethane3,000 cpsMixed Viscosity2 linked
Related records are browsing suggestions, not validated substitutes.