Chengdu Guibao Science & Technology Co., Ltd.,

Construction Silicone Sealant For Glass Secondary Seal

Product Details:
Place of Origin: CHINA
Brand Name: GUIBAO
Certification: ISO,EN1279
Model Number: 886
Payment & Shipping Terms:
Minimum Order Quantity: 10 kits
Price: Negotiable
Packaging Details: Part A in 200L drums (net 190L), part B in 20L pails (net 19L)
Delivery Time: 4 working days
Payment Terms: T/T
Supply Ability: 100 kits/4 working days
  • Detail Information
  • Product Description

Detail Information

Features: Two Part, Neutral Fast Cure Rate Colors: Black After Mixing
Shelf Life: 12 Months Test Report: En1279
Packing: Part A Base In 200L Drums (net 190L), Part B Is Available In 20L Pails (net 19L). Application: IG Units , Secondary Seal, Structural Boing
High Light:

two part silicone sealant


weatherproof silicone sealant

Product Description

Construction Silicone Structural Insulating Glass Sealant for secondary seal


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




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

High level of tensile strength and mechanical properties.

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

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

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

Excellent unprimed adhesion to wide range of substrates.

Good compatibility with other neutral silicone sealants.




Part A (base) of GB 886 is available in white, part B(curing agent) in black, black colour after mixing.




GB 886 Silicone Structural Insulating Glass Sealant is specially designed for use as secondary sealant for structural insulating glass units.




These values are not intended for use in preparing specifications.

Test Method Property Unit Standard Result
GB/T 13477 (ISO 7390) Slump mm ≤3 0
GB/T 13477 (ISO 9048) Extrusion rate s ≤10 1.9
GB/T 13477 (ASTM D2377) Tack free time h ≤3 1.3
GB/T 13477 (ISO 8339) Modulus at 10% extension MPa ≥0.15 0.22

GB/T 531 (ISO 7619 )



Hardness Shore A 30~60 43
GB/T 13477 Adhesion at 25% extension  



No failure
GB/T 13477 (ISO 8339) Tensile strength at



  23℃   ≥0.60 1.13
  90℃   ≥0.45 0.87
  -30℃   ≥0.45 1.58
  water immersion   ≥0.45 1.03
  water-UV exposure   ≥0.45 0.98
GB 16776 (ASTM C 792) Heat aging      
  weight loss % ≤6.00 3.4
  chalking   Nil Nil
  cracking   Nil Nil

*GB: Chinese National Standard

ASTM: American Society for Testing and Materials

ISO: International Standardization Organization




GB 886 is available in kit: part A base in 200L drums (net 190L), part B is available in 20L pails (net 19L).




GB 886 is designed to meet or even exceed the specification of Chinese national standard GB24266-2009.




GB 886 should be stored in original unopened containers. It has a shelf life of months from the date of manufacture.




GB 886 should not be applied:

For structural glazing of glass units onto a metal frame. GB 992 two part structural silicone and GB 999 one part structural silicone are recommended for that application.

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

To frost laden or damp surfaces.

For continuous water immersion.

When surface temperature below 4℃ or over 50℃.




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 886, it is recommended that base and curing agent thoroughly mixed using a two-part silicone dispensing machine.

GB 886 should be mixed at a ratio of 9:1~11:1 base to curing agent by volume, or 11:1~13:1 base to curing agent by weight.

Lot matching of GB 886 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 886 part B curing agent will react with atmospheric moisture, therefore should not be exposed to air for prolonged period of time.



Priming is not usually required when using GB 886.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.




GB 886 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.




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




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.



Get in touch with us

Enter Your Message