H.B. Fuller 1527T

Identification

Chemical Family

Silicones,

Polysiloxanes

GBU

EA

RTU Product Type

1K (1 component) Sealant,

Reactive Sealant

Categories

Markets → Automotive & Transportation → Applications → Bonding & Assembly → Sealants

Markets → Industrial → Applications → Chemical & Industrial Manufacturing → Equipment & Parts

Technologies → Adhesives & Sealants → Product Families → Sealing Technology → Reactive Sealants

Application Information

Cure Method

Moisture Cure

Applications

Application Area

Power Transformers,

Windows,

HVAC Ducts,

Vents,

Junction Boxes,

HVAC Applications

Compatible Substrates & Surfaces

Glass

Applications & Uses

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.

Features

Ready-to-Use Product Features

Exceptional UV Resistance,

Fast Setting,

Good Sagging Resistance,

Heat Resistance,

High Flexibility,

Low Odor,

Room Temperature Vulcanizing,

Wide Temperature Operating Range,

Waterproofing,

Electrical Insulation Properties,

Improved Workability,

Room Temperature Curing

Packaging & Availability

Regional Availability

• North America

Packaging Information

• 85ml
• 310ml

Physical Properties

Color (Properties)

Translucent

Physical Form

Paste

Appearance

Translucent

Properties

Cured Properties

	Value	Units	Test Method / Conditions
Elongation at Break	350	%	ISO37
Elongation at Break (50% relative humidity)	350	%	ISO37, GB/528
Hardness	30	Shore A	ISO7619, GB/T 531
Tensile Strength (50% relative humidity)	1.3	MPa	ISO37, GB/528
Thermal Service Range	- 54 to 210	°C	-

Typical Properties

	Value	Units	Test Method / Conditions
Specific Gravity	1	-	-
Storage Temperature	5 - 25	°C	-

Damp Heat Aging Test Properties

	Value	Units	Test Method / Conditions
Elongation at Break (at 175ºC, 168h, 50% RH)	320	%	ISO37, GB/528
Tensile Strength (at 175ºC, 168h, 50% RH)	1.4	MPa	ISO37, GB/528

Electrical Properties

	Value	Units	Test Method / Conditions
Breakdown Voltage	18	kV/mm	IEC 60243-1, GB/T1695
Volume Resistivity	5.0 x 10¹⁴	Ω-cm	IEC60093, GB/T1692

Uncured Properties

	Value	Units	Test Method / Conditions
Full Cure Time (at 21 - 25°C, 45 - 55% relative humidity, min. 2mm, full uncured)	24	hours	-
Tack Free Time	3 - 15	minutes	-

Storage & Handling

Storage Condition

Product shall be ideally store in a cool, dry area in unopened containers. Material should be stored at a temperature of 5 - 25°C. Do not return unused material back into the container.