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SILPURAN® 6400/40 A/B

Chemical Family
Silicones

SILPURAN® 6400/40 A/B is a paste-like, easily pigmentable two-component compound with short curing times. Its vulcanizates are noted for their high transparency and excellent mechanical and electrical properties. SILPURAN® 6400 exhibits excellent tear resistance measured according to ASTM D 624 B and DIN ISO 34-1 method A (DIN 53507). SILPURAN® 6400/40 A/B is designed for medical applications in compliance with the Wacker Silicones Health Care Policy, including implantation for less than 30 days.

Properties

Physical Form
Paste

Product families

Applications

Healthcare & Pharma — Medical
  • Medical Devices & Assemblies

Product Families

Elastomers — Specialty Elastomers
  • Silicone Elastomers

Other characteristics

Brand
SILPURAN
End Uses

Gaskets, Medical Devices, Medical/Healthcare Applications

Features

Excellent Surface Properties, Excellent Transparency Properties, Fast Curing, Food Contact Acceptable, Good Electrical Properties, Good Mechanical Properties, Low VOC, Low Volatility, Pigmentable, Tear Resistance

Tear Strength
15.0 - 15.0 kN/m
Note

Cure conditions: 5 min / 165 °C in press, post-cured 4 h / 200 °C

Carrier
Liquid Silicone Rubber (LSR)
Markets
Healthcare & Pharma
Properties

SILPURAN® 6400/40 A/B meets selected test requirements of ISO 10993 and United States Pharmacopeia (USP) Class VI. It is designed for medical applications in compliance with the WACKER SILICONES HEALTH CARE POLICY including implantation for < 30 days and is particularly suitable for the economical production of large series of injection molded articles. At service temperatures above approx. 180°C the addition of heat stabilizers is recommended. Further information about an improvement of the heat stability by use of specific ELASTOSIL® Color Pastes FL can be obtained from the Technical Information Sheet "ELASTOSIL® Color Pastes FL" or the latest edition of our brochures.

Technology
Elastomers
Packaging Type
Pails
Labeling Claims
Food Contact Acceptable
Specific Features
  • Food-contact
  • High tear-resistant
  • Reduced volatile content
Material Features
  • Excellent Surface Properties
  • Excellent Transparency Properties
  • Fast Curing
  • Food Contact Acceptable
  • Good Electrical Properties
  • Good Mechanical Properties
  • Low VOC
  • Low Volatility
Storage Information

Once opened, containers should always be resealed after use to prevent the platinum catalyst from being poisoned by amines, sulfur or phosphorus compounds.

Technical data

Table 1 of 2

8 rows
CharacteristicValueUnitMethod
Compression Set (at 22 hours, 175°C)25%DIN ISO 815-1 type B method A
Density1.12g/cm³DIN EN ISO 1183-1 A
Elongation (at break)630%ISO 37 Type 1
Rebound Resilience54%ISO 4662
Shore Hardness A40—DIN ISO 48-4
Tear Strength35N/mmASTM D 624 B
Tear Strength15N/mmDIN ISO 34-1 method A
Tensile Strength9.2N/mm²ISO 37 Type 1

Table 2 of 2

2 rows
CharacteristicValueUnitMethod
Dynamic Viscosity (Shear rate 1 s⁻¹)830000mPa·sDIN EN ISO 3219
Dynamic Viscosity (Shear rate 10 s⁻¹)375000mPa·sDIN EN ISO 3219

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