HB Fuller 1521 Silicone system

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HB Fuller 1521 Silicone system
Categories:	Polymer; Thermoplastic; Adhesives, Sealants, and Coatings
Material Notes:	1521 is two-component, room temperature cure silicone system. It has very low ionics and can be used for electronic component applications and electronics potting. Applications include appliance sealing, connector sealing, and junction box potting. Features and Benefits: UL Certified Low viscosity enabling flow and some self leveling Electronics potting and encapsulation applications Wide operating temperature range Excellent dispensability Fast setting and fast curing enabling reduced production times Typical Applications: Sealing Electrical Potting Electrical Connector Sealing Electronics Potting Information provided by H.B. Fuller Company
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Physical Properties	Original Value	Comments

Specific Gravity	1.40 g/cc
Viscosity	25 cP	Part B
	7000 cP	Part A
Storage Temperature	8.00 - 25.0 °C

Mechanical Properties	Original Value	Comments
Hardness, Shore A	40	ISO 7619
Tensile Strength	1.20 MPa	ISO37
Elongation at Break	110 %	ISO37

Electrical Properties	Original Value	Comments
Volume Resistivity	1.00e+15 ohm-cm	IEC 60093
	1.00e+15 ohm-cm	Damp Heat Aging Testing; IEC 60093
Dielectric Strength	23.0 kV/mm	IEC 60243-1

Thermal Properties	Original Value	Comments
Maximum Service Temperature, Air	150 °F
Minimum Service Temperature, Air	-50.0 °F

Processing Properties	Original Value	Comments
Cure Time	8.00 min	Working
	45.0 min	Fixture
	168 hour @Temperature 25.0 °C	50% RH
Shelf Life	6.00 Month

Descriptive Properties
Color	White
Consistency	Low Viscosity Liquid
Mix Ratio	4:1	Volume
	6:1	Weight

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PHBFULL081 / 316872

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