H.B. Fuller 1527 White

H.B. Fuller 1527 White, also called 1527SWT, is a white, UL-certified, one-component RTV silicone with super resistance to weathering and ultra violet (UV). This material has very good adhesion without the need for primers to a wide range of substrates. It can be used for a variety of interior and exterior bonding and sealing applications. 1527 White is formulated to perform at temperatures ranging from -54°C to 210°C.

Product Type: 1K (1 component) Sealant, Encapsulant, Reactive Sealant

Application Area: Appliances, Battery Sealing, Blades, Edge Gluing, Energy Storage, Frame Sealing, HVAC Applications, Ingot Bonding, Junction Boxes, Lighting Fixtures, Lithium-Ion Battery, Module Installation, Rail Bonding, Solar Cell, Solar Energy Lamps, Turbines

Compatible Substrates & Surfaces: Glass

Chemical Family: Silicones

Features: Excellent Damp-Freezing Performance , Excellent Damp-Heat Performance , Excellent Thermal Cycling Performance, Exceptional UV Resistance, Good Sagging Resistance, Good Weather Stability, Heat Resistance, Long Shelf Life, Room Temperature Vulcanizing, UV Resistant, Wide Temperature Operating Range

Technical Data Sheet
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Enhanced TDS

Identification & Functionality

Features & Benefits

Applications & Uses

Application Area
Compatible Substrates & Surfaces
Cure Method
Curing Conditions

Cure speed will vary with temperature, relative humidity, depth of material and presence of moisture. Some applications may require special surface preparation. At 21 - 25°C, 45 - 55% relative humidity, typical cure depth is 2mm in 24 hours. Requires more time to cure in colder or lower humidity conditions.

General Instructions
  • For best performance bond surfaces should be clean, dry and free of any contaminants and oils.
  • Apply a continuous and even bead of silicone to one surface.
  • Assemble parts immediately. Remove excess material at once.


Physical Form
White thixotropic paste
Electrical Properties
ValueUnitsTest Method / Conditions
Volume Resistivity1.0 x 10¹⁵Ω.cmIEC60093, GB/T1692
Breakdown Voltage20.0kV/mmIEC 60243-1, GB/T1695
Technical Data
ValueUnitsTest Method / Conditions
Specific Gravity1.37--
Cured Properties
ValueUnitsTest Method / Conditions
Thermal Service Range- 54 - 210°C-
Hardness48.0-ISO7619, GB/T531, Shore A
Tensile Strength2.3MPaISO37, GB/528
Lap Joint Shear Strength (Aluminum)1.8MPaISO4587, GB7124
Damp Heat Aging Test Properties
ValueUnitsTest Method / Conditions
Elongation at Break320.0%ISO37, GB/528
Tensile Strength1.6MPaISO37, GB/528
Uncured Properties
ValueUnitsTest Method / Conditions
Tack Free Time6.0min-
Full Cure Time (21 - 25°C, 45 - 55% RH, min. 2mm)24.0h-
Rheological Properties
ValueUnitsTest Method / Conditions
ViscosityThixotropic paste--

Test Sample Conditions: 2mm Thickness, Cured at 21 - 25°C, 45 - 55%RH for 7 days. Tested at 21 - 25°C

Packaging & Availability

Regional Availability
  • North America
Packaging Information
  • 400ml
  • 600ml
  • 25kg
  • 270kg

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. Do not return unused material back into the container.