Polymer Systems
Technology Limited

Advanced Engineering

Optoelectronics:
Electronics:

LS1-6140

Potting and Encapsulating Elastomers

Optically Clear Silicone Elastomer

DESCRIPTION
  • Two-part, optically clear silicone system
  • Based on a methyl silicone polymer
  • Low viscosity
  • 1:1 Mix Ratio (Part A:B)
  • Requires heat to cure
APPLICATION
  • For bonding, casting or compression molding of high performance optical components
  • For applications requiring index matching at 1.40
  • For photonics applications requiring low volatility silicone to avoid contamination
PROPERTIES
Typical PropertiesAverage Result
Uncured:
AppearanceColorless and Transparent
Viscosity, Part A3,450 cP (3,450 mPas)
Viscosity, Part B2,500 cP (2,500 mPas)
Viscosity, Mixed (V1) within 30 minutes of catalyzation3,200 cP (3,200 mPas)
Viscosity, Mixed (V2) 24 hours after catalyzation3,600 cP (3,600 mPas)
Viscosity, (V2/V1) 24 hours after catalyzation1.1
UV/Visible Spectrophotometry at 400nm99%T
Cured: 60 minutes at 150°C (302°F)
Specific Gravity1.02
Durometer, Type A50
Tensile Strength900 psi (6.2 MPa)
Elongation90%
Lap Shear Strength (primed with LS1-3200)270 psi (1.9 MPa)
Volume Resistivity*1.3 X 1015 ohm cm minimum
Dielectric Strength*630 V/mil (13.8 kV/mm)
Ionic Content, Cl*< 5ppm
Ionic Content, K*< 2.5 ppm
Ionic Content, Na*< 2.5 ppm
Glass Transition Temperature (Tg)*-115 °C (-175°F)
Coefficient of Linear Expansion (-150 °C to -120°C)*99 ppm/°C (99µm/(m°C))
Coefficient of Linear Expansion (-100 °C to 100°C)*330 ppm/°C (330µm/(m°C))
Refractive Index, 589 nm1.4
Transmittance vs. Wavelength (25°C)See Profile PDF for Graph
Refractive Index vs. Wavelength (25°C)See Profile PDF for Graph
Refractive Index vs. Temperature by WavelengthSee Profile PDF for Graph

*These properties NOT tested on a lot-to-lot basis. Please contact NuSil Technology for assistance and recommendations in establishing particular specifications.

Packaging

50 Gram Kit
50 mL SxS Kit
500 Gram Kit
2 Pint Kit (0.91 kg)
2 Gallon Kit (7.28 kg)

Warranty

12 Months

Product Profile - Full Details Product Profile
Material Safety Data Sheet EU EN Material Safety Data Sheet

Biomaterials

Medical Silicones
Biomaterials - Medical Silicones for Healthcare

Advanced Technologies

Advanced Technologies Industrial & Engineering Silicones
Space - Aviation Grade Industrial & Engineering Silicones

Tubing

Food Medical Industrial Grade Silicone Tubing
Food, Medical & Industrial Quality Silicone Tubing

Equipment

Silicone Mixing Dispensing Degassing Equipment
Mixing Dispensing & Degassing Equipment for Silicone