Polymer Systems
Technology Limited

Advanced Engineering

Optoelectronics:
Electronics:

LS-8941

Molding Elastomer

Optically Clear High Durometer Silicone Elastomer

DESCRIPTION

Two-part, optically clear, non-phenyl containing addition cure silicone
Designed to stay thermo-optically stable with heat and UV exposure
24 hours minimum work time
80 Type A durometer aids with scratch resistance and reduces tackiness

APPLICATION

For molding or casting hard, non-yellowing lenses for LED, solar or other applications where a hard, optically-stable silicone is needed
Viscosity is designed to be used with conventional Liquid Injection Molding equipment, and the material is self-leveling for casting application techniques

PROPERTIES
Typical Properties	Average Result
Uncured:
Appearance	Transparent Liquid
Viscosity, Part A	27,500 cP (27,500 mPas)
Viscosity, Part B	25,000 cP (25,000 mPas)
Viscosity, tested within 30 minutes after catalyzation	21,500 cP (21,500 mPas)
Refractive Index	1.41
UV/Visible Spectrophotometry at 400 nm, 1 cm path length	94 %T
Cured: 30 minutes at 150°C (302°F)
Specific Gravity	1.07
Durometer, Type A	80
Tensile Strength	1,250 psi (8.6 MPa)
Elongation	65%
Tear Strength	55 ppi (9.7 kN/m)
UV/Visible Spectrophotometry @ 400 nm, 1.9 mm path length	95%T

Properties tested on a lot-to-lot basis. Do not use the properties shown in this technical profile as a basis for preparing specifications. Please contact NuSil Technology for assistance and recommendations in establishing particular specifications.

Packaging

50 mL SxS Kit
2 Pint Kit (910 g)
2 Gallon Kit (7.28 kg)
10 Gallon Kit (36.4 kg)

Warranty

12Months