CONSTRUCTION SILICONE

Two part silicone sealant suited for the secondary seal in insulating glass units 

GB 882 Silicone

Insulating Glass Sealant

FEATURES                

l  Two part, neutral fast cure rate, suitable for factory application  

l  High level of tensile strength and mechanical properties

l  Excellent adhesion to a wide range of substrates including coated glass, low -E glass, tempered glass, laminated glass, aluminum and steel spacers etc.

l  Excellent weatherability and high resistance to ultra-violet  radiation ,heat and humidity, and ozone

l  Excellent resistance to temperature extremes, unaffected performance from –50 ℃ to +150 ℃

l  Good compatibility with other neutral silicone sealants

COLOURS

Part A (base) of GB 882 is available in white, part B (curing agent) in black, black color after mixing.

BASIC USES

GB 882 Silicone Insulating Glass Sealant is specially designed for use as secondary sealant for insulating glass units.

 TYPICAL PROPERTIES

These values are not intended for use in preparing specifications.

*GB: Chinese National Standard

 ASTM: American Society for Testing and Materials

 ISO: International Standardization Organization

 PACKAGING

GB 882 is available in kit: part A in 200L drums (net 180L), part B in 20L pails (net 18L).

SPECIFICATIONS

GB 882 is designed to meet or even exceed the requirements of

l  Chinese national specification

   GB/T 29755-2013

 STORAGE AND SHELF LIFE

GB 882 should be stored in original unopened containers. It has a shelf life of 12 months from the date of manufacture.

 LIMITATIONS

GB 882 should not be applied:

l  For structural glazing

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

l  To frost laden or damp surfaces  

l  For continuous water immersion

l  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, old sealants, surface dirt, or glazing compounds and protective coatings.

Mixing and Dispensing

To obtain the optimal performance of GB 882, it is recommended that base and curing agent thoroughly mixed using a two-part silicone dispensing machine.

GB 882 should be mixed at a ratio of 9:1～11:1 base to curing agent by volume, or 14:1～16:1 base to curing agent by weight for optimal performance.

Lot matching of GB 882 base to curing agent is not required. Before use, it is recommended that curing agent be stirred to ensure the homogeneity of all components.

GB 882 part B curing agent will react with atmospheric moisture, therefore should not be exposed to air for prolonged periods of time.

Priming

Priming is not usually required when using GB 882. But it is essential that adhesion is tested prior to use to decide whether to use primer or not. 

Masking and Tooling

Areas adjacent to joints may be masked to ensure a neat sealant line Do not allow mask tape to touch clean surfaces to which the silicone sealant is to adhere. Tooling should be completed in one continuous stroke after sealant application. Masking tape should be removed immediately after tooling.

Equipment Cleaning

When not being used, it is recommended that the dispensing equipment be purged either with the base component or flush with suitable solvent.

 SAFETY INFORMATION

l  GB 882 is a chemical product, not edible, no implantation into body and should be kept away from children.

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

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

l  Avoid prolonged exposure of skin to uncured silicone sealant.

l  Good ventilation is necessary for work and cure places.

TECHNICAL SERVICES

Complete technical information and literature, adhesion 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 specific applications.  

 Manufacturer

Chengdu Guibao Science and Technology Co.,Ltd.

No.16, Xinyuan Road, I-tech Zone, Chengdu 610041

P.R.CHINA

Tel: +86 28 8531 1860

Fax: +86 28 8531 8066

E-mail:guibao@cnguibao.com

www.cnguibao.com