Curtain Wall Silicone Weatherproofing Sealant For Stone Application Easy Operate

Product Description

Silicone Weatherproofing Sealant for Stone Application

 

FEATURES

 

One part, neutral cure, easy for application

Non-staining to natural stones and other porous substrates

Outstanding UV and weathering resistance

 

BASIC USES

 

GB 997 Silicone Sealant for Stone Applications is specially formulated for

Weatherseal in stone curtain walling and cement panel precasting

Bonding and caulk seal in ceramic engineering

Sealing the joints between stone and other construction materials such as glass and metals etc.

 

COLOURS

 

GB 997 is available in black, gray and other customized colours.

 

PACKAGING

 

GB997 is available in cartridges(net 300ml),24 pieces to a carton or in sausages (net 500ml),20 pieces to a carton

 

TYPICAL PROPERTIES

 

Test Method	Property		Unit	Standard	Result
GB/T 13477 (ISO 7390)	Slump		mm	≤3	0
GB/T 13477 (ISO 8394)	Extrusion rate		ml/min.	≥80	373
GB/T 13477 (ASTM D 2377)	Tack free time		h	≤3	1.2
GB/T 13477 (ISO 7389)	Extension recovery		%	≥80	90
GB/T 13477 (ISO 8339)	Modulus at 23℃		MPa	＞0.4	0.74
GB/T 13477 (ISO 11600)	Movement capability		%	±20	±20
GB/T 13477	Adhesion at fixed stretch			No failure	No failure
GB/T 13477	Adhesion after heat contract and cold extension			No failure	No failure
GB/T 13477	Adhesion at fixed stretch after water immersion			No failure	No failure
GB/T 23261	Staining	Stain depth	mm	≤2.0	0
		Stain width	mm	≤2.0	0
GB/T 13477 (ISO 10563)	Weight loss		%	≤5.0	3.0
*GB: Chinese National Standard ASTM: American Society for Testing and Materials ISO: International Standardization Organization

 

                                                                         

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SPECIFICATIONS

 

GB 997 is designed to meet or even exceed the requirements of

Chinese national specification GB/T 23261-2009 20HM

Complies with ASTM C 1248

 

LIMITATIONS

 

GB 997 should not be applied:

As structural sealant

To the materials that bleed oils , plasticizers or solvents, such as impregnated wood, oil-based caulks

In totally confined spaces as sealant requires atmospheric moisture for cure

To frost laden or damp surfaces

For continuous water immersion

When surface temperature below 4℃ or over 50℃

 

HOW TO USE

 

Surface Preparation

Clean all joints removing all foreign matter and contaminants such as oil, grease, dust, water, frost, surface dirt, protective coatings.

 

Application Method

Install back-up materials or joint fillers, setting blocks, spacer shims, and tapes. Mask areas adjacent to joints to ensure neat sealant lines. Primer is generally not required for non-porous surfaces, but may be necessary for optimal seal performance of certain porous surfaces. So adhesion test is always recommended.

 

Apply GB 997 in a continuous operation using dispensing guns. Before a skin forms, tool the sealant with light pressure to spread the sealant against the backing materials and joint surfaces. Remove masking tape as soon as the bead is tooled.

 

SAFETY INFORMATION

 

GB 997 is a chemical product, not edible, no implantation into body and should be kept away from children.

Cured silicone rubber can be handled without any risk to health.

Should uncured silicone sealant contact with eyes, rinse thoroughly with water and seek medical treatment if irritation persists.

Avoid prolonged exposure of skin to uncured silicone sealant.

Good ventilation is necessary for work and cure places.

 

TECHNICAL SERVICES

 

Complete technical information and literature, adhesion testing, stain testing and compatibility testing are available from Guibao.

 

DISCLAIMER

 

The information presented herein is offered in good faith and is believed to be accurate. However, because conditions and methods of using our products are beyond our control, this information should not be used in substitution for customer’s tests to ensure that our products are safe, effective, and fully satisfactory for intended specific applications.