LOCTITE® STYCAST 4640

Features and Benefits

LOCTITE STYCAST 4640, Silicone, Flexible, Potting or Encapsulant
LOCTITE® STYCAST 4640 RTV condensation cure silicone rubber syntactic foam is engineered to yield a flexible, low density material with a low dielectric constant and dissipation factor. It is designed for airborne potting, sealing and caulking applications requiring low weight and excellent dielectric properties. LOCTITE STYCAST 4640 can be used with LOCTITE CAT 50 or LOCTITE CAT 50-2 AMB.
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Technical Information

Color White
Cure schedule, @ 25.0 °C 16.0 - 24.0 hr.
Cure schedule, @ 65.0 °C 2.0 - 4.0 hr.
Cure type Heat cure
Density 0.75 g/cm³
Number of components 2 part
Operating temperature -65.0 - 260.0 °C
Physical form Liquid
Shelf life 183.0 day
Shore hardness, Shore A 70.0
Storage temperature 4.0 °C
Tensile strength 1.4 N/mm² (200.0 psi )
Viscosity, Brookfield 45000.0 mPa·s (cP)
Volume resistivity > 1x10¹⁴ Ohm cm