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Wacker Elastosil A 4 Silicone - Screen Printable

Type: Silicone
Brand: Wacker Silicone

OVERVIEW

Wacker Elastosil A 4 Screen Printable Silicone Overview

Wacker Elastosil A 4 is a one-part, Amine based silicone adhesive used for bonding and sealing. Like Elastosil A 16 Blue, the A 4 product is one part screen printable silicone. This particular silicone has a very long skin over time and cures with carbon dioxide and moisture.

Specifications

Elastosil A 4 Specifications

Typical general characteristics	Inspection Method	Value
Appearance	WSTM-219	Red Liquid
Viscosity, cP, at 25°C	WSTM-2103	21000
Solids (%)	WSTM-2288	92
Skin-over Time, min, 25°C with moist carbon dioxide	WSTM-2290	5
Skin-over Time, hrs, 25°C, 50% relative humidity, ambient conditions	WSTM-2118	8
As Cured (Bead Thickness, 50 100 mil)
Hardness Shore A	WSTM-1110	50
Tensile Strength, MPa	WSTM-1228	2.4
Tensile Strength, psi	350
Elongation at break	WSTM 1228	100 %
After Fluid Immersion ASTM #1 Oil (70hrs/150 C)
Hardness, points change	WSTM-1118	-15
Tensile loss, Max %	WSTM-1118	-20
Elongation, loss, Max %	WSTM-1118	-20
After Fluid Immersion IRM 903 Oil (70hrs/150 C)
Hardness, points change	WSTM-1118	-30
Volume change, %	WSTM-1118	60
Heat Resistance (70 hrs/225 C)
Hardness, points change	WSTM-1116	10
Tensile loss, Max %	WSTM-1116	-25
Elongation, loss, Max %	WSTM-1116	-30