DUROPTIX OE-6370

Main features

1:1 Optical Encapsulant Mixing
100% Transparent Optical Protection
240-Minute 150 deg C Cure

Product Description

DuPont Duroptix™ OE-6370 HF Optical Encapsulant is a colorless, two-part 1:1 mix silicone elastomer designed for LED encapsulation and overmolding applications. Based on a polydimethylsiloxane chemistry, this optical encapsulant combines high transparency, thermal stability, moisture resistance, and adhesion to commonly used LED substrates. The material provides excellent optical clarity with 100% transparency at 450 nm through a 1 mm sample thickness and is formulated to withstand the thermal demands associated with modern LED manufacturing processes. Its fast-curing characteristics and compatibility with standard dispensing and molding equipment support efficient production workflows for LED packaging and protection.

Key features

High optical transparency: Delivers 100% transparency at 450 nm (1 mm thickness) for light-transmission-critical LED applications.
Fast heat cure: Achieves cure in approximately 240 minutes at 150°C, supporting efficient LED encapsulation processes.
Thermally stable silicone elastomer: Provides durability across demanding operating environments and LED package thermal cycles.

Applications / Suitable for

LED encapsulation
LED package protection
Optical encapsulant applications
Overmolding processes

TDS, SDS & Technical Documents

Technical Specifications

General Properties

Color

Clear

Component System

Mix Ratio

1 : 1

Refractive index

1.41

Additional Information

Technical properties

As-supplied / before-processing properties

Representative as-supplied properties for the two-part optical encapsulant system.

Property	Value	Unit	Method / condition
Mix Ratio	1:1	-	Two-part system
Color	Clear	-	As supplied
Viscosity (Part A)	6100	cP	Part A
Viscosity (Part B)	5300	cP	Part B
Mixed Viscosity	5600	cP	Mixed material
Shelf Life	12	months	Stored at 35°C