H.B. Fuller 1522

H.B. Fuller 1522 is a two-component condensation-cure silicone material that has a fast room-temperature curing speed and very good adhesion to many different materials. It has very good long-term adhesion performance in high-temperature conditions. 1522 is designed for use in a variety of applications where long-term temperature cycle resistance, UV exposure, and other harsh exposure conditions exist.

Product Type: 2K (2 component) Adhesive, Encapsulant, Reactive Adhesive

Application Area: Appliances, Batteries, Blades, Connectors, Edge Gluing, Electrical Boxes, Electronic Components, Encapsulant, Energy Storage, Frame Sealing, HVAC Applications, Ingot Bonding, Junction Boxes, Lithium-Ion Battery, Module Installation, PV Modules, Rail Bonding, Solar Panel, Turbines

Compatible Substrates & Surfaces: Aluminum, Composites, Glass, Metal, Plastics

Chemical Family: Silicones

Features: Excellent Sealing Capability, Fast Setting, Good Thick Section Cure, High Impact Resistance, Rapid Cure Response, Room Temperature Curing, UV Resistant

Technical Data Sheet
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Enhanced TDS

Identification & Functionality

Chemical Family

Features & Benefits

Labeling Claims

Applications & Uses

Compatible Substrates & Surfaces
Curing Conditions

Cure speed will vary with temperature, relative humidity, depth of material and presence of moisture. Some applications may require special surface preparation.

General Instructions
  • It is recommended that an automated dispensing unit be used to mix material. Use alcohol, mechanical polishing, or an organic solvent to clean the surface of the substrates. For best performance bond surfaces should be clean, dry and free of any contaminants and oils.
  • Before use of material, test product adhesion to the substrate to ensure that the adhesive meets desired adhesion performance properties.This material is a moisture-cure type material. It will start to cure immediately after mixing two components.
  • Moisture in the air will assist to cure material. It is recommended to schedule a timely purge for the use of mixed material in the static mixer. This is done to avoid inconsistent mixing and to ensure desired performance and properties.


Physical Form
Component A
ValueUnitsTest Method / Conditions
Viscosity7 - 14s/20gExtrusion Rate, ASTM C603
Component B
ValueUnitsTest Method / Conditions
Viscosity5 - 11s/20gExtrusion Rate, ASTM C603
Electrical Properties
ValueUnitsTest Method / Conditions
Volume Resistivity1.0 x 10¹⁵Ω.cmIEC60093, GB/T1692
Breakdown Voltage23.0kV/mmIEC 60243-1, GB/T1695
Cured Properties
ValueUnitsTest Method / Conditions
Elongation at Break (21 - 25°C, 50% RH)210.0%ISO37, GB/528
Tensile Strength (at 21 - 25°C, 50% RH)2.4MPaISO37, GB/528
Thermal Service Range- 50 - 150°C-
Hardness42.0-ISO7619, GB/T531, Shore A
Lap Joint Shear Strength (at 21 - 25°C, 50% RH, Aluminum)1.3MPaISO4587, GB/T7124
Damp Heat Aging Test Properties
ValueUnitsTest Method / Conditions
Hardness30.0-ISO7619, GB/T531, Shore A
Shear Strength (21 - 25°C, 50% RH)1.0MPaISO4587, GB/T7124
Tensile Strength (at 21 - 25°C, 50% RH)1.7MPaISO37, GB/528
Uncured Properties
ValueUnitsTest Method / Conditions
Fixture Timemax. 2h-
Volume Mix Ratio10:1--
Working Time10.0min-
Cure Schedule (50% RH)7.0days-

Packaging & Availability

Regional Availability
  • Africa
  • Asia Pacific (Excluding Russia)
  • Europe (Excluding Russia)
  • India
  • Latin America
  • Middle East
  • North America

Storage & Handling

Shelf Life
12 Months
Storage Condition

Product shall be ideally store in a cool, dry area in unopened containers. Material should be stored at a temperature of 8 - 25°C.