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SILPURAN® 2420 A/B

1 of 52 products in this brand
SILPURAN® 2420 A/B is an addition-curing RTV-2 silicone rubber that cures to a silicone elastomer of medium hardness. It belongs to the Room Temperature Curing Silicone Rubber (RTV-2) category. SILPURAN® 2420 A/B can be used for flexible molding applications in orthopedic technology. Components A and B of SILPURAN® 2420 A/B are mixed homogeneously in a ratio of A:B = 1:1 and vulcanize rapidly at temperatures over 100°C.

Polymer Name: Silicone Elastomer

End Uses: Orthotics, Prosthetics

Features: Biocompatible, Excellent Flowability, Fast Curing, Good Mechanical Properties, High Hardness, Low Skin Sensitivity, Low Viscosity, Medium Hardness, Pourable, Room Temperature Vulcanizing, Tear Resistance, Translucent

Tear Strength: 13.0 - 13.0 kN/m

Technical Data Sheet

Knowde Enhanced TDS

Identification & Functionality

Chemical Family
Polymer Name
Technologies

Features & Benefits

Labeling Claims

Applications & Uses

Plastics & Elastomers End Uses
Applications
  • Insoles, Orthoses & Pelottes
  • Orthotics & Prosthetics
Application Details

SILPURAN® 2420 A/B can be used for flexible molding applications in in orthopedic technology.

Processing

  • The components A and B of SILPURAN® 2420 A/B are mixed homogeneously in a ratio of 1 : 1 and vulcanize rapidly at temperatures over 100°C.
  • In a given application the required curing conditions (temperature and time) will also depend on the size and thickness of the specimen.
  • Detailed instructions for preparation and use are given in the brochure “Room Temperature Vulcanizing (RTV) Silicones - Material and Processing Guidelines”
  • Important note : The platinum catalyst is in component A.
  • Caution : Only A and B components with the same batch number may be processed together

Properties

Catalyst Properties
ValueUnitsTest Method / Conditions
Mix Ratio (A:B)1:1parts by weight
Pot Life (A+B, at 23°C)54minutesDIN EN ISO 2555
Cured Properties
ValueUnitsTest Method / Conditions
Elongation (at break)680%ISO 37 Type 1
Shore Hardness 0060ASTM D 2240
Shore Hardness A12DIN ISO 48-4
Tear Strength13N/mmASTM D 624 B
Tensile Strength3.5N/mm²ISO 37 Type 1
Uncured Properties
ValueUnitsTest Method / Conditions
Density (Componenet A)1.06g/cm³DIN EN ISO 2811-1
Density (Componenet B)1.09g/cm³DIN EN ISO 2811-1
Dynamic Viscosity (Component A)2500mPa·sDIN EN ISO 3219
Dynamic Viscosity (Component B)5000mPa·sDIN EN ISO 3219
Properties
  • Biocompatible, certificates of compatibility with USP Class VI and ISO 10993 available on request
  • No by-products from curing process
  • Low viscosity, easily pourable
  • Mixing ratio 1 : 1
  • Fast cure at room temperature which can be accelerated considerably by the application of heat
  • Translucent vulcanizate with good tear resistance
Note

Curing conditions: 10 min / 100 °C

Regulatory & Compliance

Certifications & Compliance

Packaging & Availability

Country Availability
Regional Availability
  • Africa
  • Asia
  • Europe
  • Latin America
  • Middle East
  • North America
  • Oceania