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JY988 High Performance Curtain Wall Weatherproof Silicone Sealant

JY988 is a one-part, neutral-cure elastomer designed for user-friendly application. It demonstrates superior resistance to ultraviolet radiation and long-term degradation, maintaining performance without deterioration when exposed to environmental elements such as sunlight, moisture, and temperature extremes. This formulation exhibits full compatibility with other standard silicone-based sealants and adhesives, ensuring reliable performance in joint sealing applications across various climatic conditions
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Product Advantage

Feature:

1.Superior Weatherproof Performance

Creates permanent impermeable barriers that effectively withstand prolonged water immersion and extreme weather conditions.

2.Exceptional UV & Aging Resistance

Maintains elasticity and adhesion integrity after long-term exposure to direct sunlight and harsh environmental elements.

3.Robust Aluminum Substrate Bonding

Develops powerful, durable adhesion to aluminum profiles and other metal surfaces used in building frameworks.

4.Broad Construction Material Adaptation

Demonstrates excellent compatibility with diverse building substrates including granite, coated metals, and anodized surfaces.


Technical Parameters

PropertiesTest MethodUnitResult
Extrusion rateGB/T 13477-2002ml/min619
Operating temperature rangeGB/T 13477-20025 – 40℃
Tack-free timeGB/T 13477-2002H
Durometer hardness, Shore AGB/T 13477-2002Shore A0.7
Tensile Strength at 25%GB/T 13477-2002Mpa
Tensile Strength at Ultimate EnlongationGB/T 13477-2002Mpa40
Elongation at breakeGB/T 13477-2002%0.14
sag/slumpGB/T 13477-2002mm1.21
Movement CapabilityGB/T 13477-2002
370
Tear-off strength (average) (21 days, 23℃, humidity 50%)GB/T 13477-2002Mpa0


Product Uses

Applications:

1.Building Expansion Joint Sealing

Waterproofing movement joints in concrete structures and metal panel interfaces.

2.Architectural Metal Panel Installation

Seaming and weatherproofing aluminum composite panels and metal cladding systems.

3.Skylight and Glazed Roof Assembly

Creating durable weather seals in overhead glazing systems and structural glass roofs.

4.Industrial Facility Waterproofing

Sealing building envelopes in demanding environments including airports and sports arenas.


Product Operate Guide

Step 1: Make sure compatibility and adhesion between sealants and adhesive material before using.

Step 2: The sealant displays excellent adhesive effect in the clean environment with temperature of 4℃-40℃and Relative Humidity(RH)of40%-80%.

Step 3:Surface cleaning for bond substrates, clean up the dirt, grease and other contaminants, then affixedtemporary protective tape.

Step 4: According to the size you want, cut out sealant mouth.

Diameter of Gun nozzle should be smaller than the thickness ofthe sealant injection place, it makesnozzle can stretch into the 1/2 depth of the sealant injection place. Start to inject sealant whensubstrate surface is completely dry, Extrusion and injection of sealant shall be continuous ,whichmakes sure the extrusion of sealant is continuous and uniform cylinder, the move the gun slowly anduniformly, make sure the substrate interface is full of silicone sealant. Quick move is not allowed forthe gun, it will cases bubbles or holes.

Step 5: Decoration should be carried out when the injection is finished, and remove temporary protective tape.


1.Surface-Cleaning

1.Surface Cleaning

2.Afixed-Tape

2.Affixed Tape

3.Sealant-Mouth-Cutting

3.Sealant Mouth Cutting

4.lnjection

4.Injection

5.Surface-Fixing

5.Surface Fixing

6.Tape-Remove

6.Tape Remove

7.Finish

7.Finish


FAQ

FAQ
  • What are the optimal conditions for applying this structural sealant?
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    Application should be conducted in dry conditions with ambient temperatures between 5°C to 40°C, ensuring all surfaces are completely clean and free from contaminants.
  • How long must the sealant cure before undergoing structural stress?
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    The joint requires 14-21 days of undisturbed curing under standard conditions to achieve full structural strength and load-bearing capacity.
  • Can this sealant be applied to damp substrates during construction?
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    All surfaces must be thoroughly dry before application, as moisture contamination during installation will compromise adhesion development and final bond strength.
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Guangzhou JAYO Technology Co., Ltd. is the import and export arm of Dayou Building Materials Co., Ltd. Since its founding, we have continuously enhanced our customer...

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