H.B. Fuller 1527

H.B. Fuller 1527, also called 1527SBK, is a black, 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 Black is formulated to perform at temperatures ranging from -54°C to 210°C.

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

Application Area: Blades, Edge Gluing, Electrical Boxes, Electronic Components, Energy Storage, Frame Sealing, Ingot Bonding, Junction Boxes, Lithium-Ion Battery, Module Installation, PV Modules, Photovolatics, Rail Bonding, Solar Cell, Solar Panel, Turbines

Features: Enhanced Damp Proofing, Excellent Performance, Good Weather Stability, High Insulation Properties, High Performance, UV Resistant

Technical Data Sheet
Message our experts with questions
Robert Blackstone avatar

Robert Blackstone

Global Leader - Inside Sales

Please reach out to me with any questions, I am happy to assist you in finding the right product or learning more about our storefront

Enhanced TDS

Identification & Functionality

Features & Benefits

Applications & Uses

Application Area
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
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
Elongation at Break300.0%ISO37, GB/528
Lap Joint Shear Strength (Aluminum)1.8MPaISO4587, GB7124
Hardness48.0-ISO7619, GB/T531, Shore A
Tensile Strength2.3MPaISO37, GB/528
Thermal Service Range- 54 - 210°C-
Damp Heat Aging Test Properties
ValueUnitsTest Method / Conditions
Tensile Strength (at 85°C, 85%RH, 1000h)1.6MPaISO37, GB/528
Elongation at Break (85ºC, 85% RH for 1000h)320.0%ISO37, GB/528
Uncured Properties
ValueUnitsTest Method / Conditions
Tack Free Time6.0min-
Full Cure Time (21 - 25°C, 45 - 55% RH, min. 2mm)24.0h-

Regulatory & Compliance

Certifications & Compliance

Packaging & Availability

Regional Availability
  • Africa
  • Asia Pacific (Excluding Russia)
  • Europe (Excluding Russia)
  • India
  • Latin America
  • Middle East
  • North America
Packaging Information
  • 310ml
  • 400ml
  • 600ml
  • 25kg
  • 235kg

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.