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Two Component Structural Silicone Sealant

FOB Price: US $1,000 - 1,500 / Barrel | Get Latest Price
Min.Order Quantity: 10 Barrel/Barrels
Supply Ability: 200000 Kilogram/Kilograms per Month
Port: Shanghai / Ningbo
Payment Terms: L/C,T/T
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Quick Details

Place of Origin:
Zhejiang, China (Mainland)
Double Components Adhesives
Main Raw Material:
Brand Name:
Model Number:
two part:
structural use

Packaging & Delivery

Packaging Details: Part A: 180L/190L/260KG (NET WEIGHT) in drum Part B: 18L/19.5L/20KG (NET WEIGHT) in pail
Delivery Detail: two weeks


1. special for curtain wall
2. excellent unprimed adhesion to glass and metal substrates
3. perfect weatherproof ability

JOINLEADER 998 Two Component Structural Silicone Sealant



JOINLEADER 998 2-Component Structural Silicone Sealant is a two-component, high quality, neutral and room-temperature cured Silicone Structural Sealant.

JOINLEADER 998 2-Component Structural Silicone Sealant is especially for structural glass assembly with excellent unprimed adhesion to most common building materials.

High ultimate tensile strength sealant ideally suited for structural bonding and protective glazing applications



Odorless, neutral and non-corrosive cure at room temperature.

Excellent resistance to weather, over 50 years’ duration under normal climatic conditions

Excellent resistance to low and high temperature, performance changes little between -50°C~200°C

Excellent mechanical properties

Very good adhesion and compatibility, especially to metals (non-corrosive) and various paint systems.

Be compatible to most membrane-plated glass or hollow glass.

Successfully tested for use in protective glazing applications

Excellent unprimed adhesion to wide range of substrates.

Meets global standards for structural glazing (American, China, Europe)




Bases as supplied:

Aspect:                           Viscous white Paste

Gravity, g/ cm3:                        1.3~1.4

Viscosity, mPa.s                    130,000~170,000


Curing agent as supplied:

Aspect:                         Viscous black Paste

Gravity, g/ cm3:                         1.0~1.1

Viscosity, mPa.s                    12,000~17,000


As mixed:

Color and Consistency                 Black, non-slump paste

Gravity, g/ cm3                         1.3~1.4

Viscosity, mPa.s                        35,000~45,000

Working Time ,Min                     10 to 30 (23°C/75°F, 50% RH)

Tack-Free Time ,Min                   80 to 100 (23°C/75°F, 50% RH)

Corrosiveness                         Non-corrosive


AFTER CURED: 23°C±2°C, RH50%±5% 14 days

SERVICE TEMPERATURE:       -50°C to +250°C




Test method


Slump, mm


GB/T 13477.6-2002


Extrudability, s


GB/T 13477.3-2002


Tack-free time, h


GB/T 13477.5-2002


Hardness (Shore)


GB/T 531-1999


Mass loss by heat, %


GB 16776-2005




Standard, MPa


GB/T 13477.8-2002

90°C, MPa


GB/T 13477.8-2002

-30°C, MPa


GB/T 13477.8-2002

Flooded, MPa


GB/T 13477.8-2002

Flooded-UV, MPa


GB/T 13477.8-2002


Joint Movement Capability,%




Tear Strength, kN/m


ASTM D0624


Peel Strength ,ppi


ASTM C0794


Tensile at 25% Elongation,MPa



Tensile at 50% Elongation,MPa




Elongation at break,%


ISO 8339



JOINLEADER 998 2-Component Structural Silicone Sealant can be used for structural glazing and sealing for glass, stone, aluminum panel curtain wall.

For silicone structural glazing and protective glazing applications.

It can also be used for secondary seal of insulating glass, filling and sealing for complex edge.



JOINLEADER 998 2-Component Structural Silicone Sealant is not suitable for following situations:

1. To all surfaces that bleed oil, plasticizers or solvents such as wood immersed in oil, oil crack filler, and some uncured or sulfurized fat and to surface where is wet;

2. To the substrate that the surface temperature exceeds +50°C or apply at temperatures below 5°C;

3. To use in construction or sealing of aquariums;

4. To the painted surfaces, may cause seal failure as the paint cracking or stripping;

5. To the surfaces that with direct touch of food;

6. Not recommended for continuous water immersion applications;

7. Not recommended for use with marble and similar highly porous;

8. Joints on the ground and places inclining to abrasion or physically damaged

9. Not recommended for use in below ground joints or trafficable;

10. Contact with acetoxy silicone sealant



The design of silicone structural joints is prepared according to the general rules in construction area by designing experts. The basic designing rule of typical silicone structural joints includes:

The width of structural glue shall not be less than 6mm.

The depth of structural glue shall not be less than 6mm.

The width of structural glue shall be equal to or larger than its depth..

Structural joint must be filled fully with glue in normal way.

Structural joint cannot be moved during its solidification period.

The design in joint must assure that air can touch structural glue so that the glue will solidify.

When silicone structural sealant is used to support permanent load, the designed load intensity is 6.9 KPa.

Note: Designing rule may be different for other specialized system. The suitable rule of this kind of system will change according to its particular design.



Please follow the instructions in our brochure. Before process, combine the two components, A(base compound ) and B(curing paste) into a homogeneous mixture, the compounds should be mixed in the following ratios(by weight and volume respectively)

Weight :13 parts Component A (base compound)

             1 parts Component B (curing paste)

Volume :10 parts Component A (base compound )

             1 parts Component B (curing paste)

ie:10 or 13 parts (±10%) base compound are mixed with 1 part curing paste.

Care should taken not to entrap air when mixing the two paste. If this is unavoidable , the material must be subsequently evacuated.

During vulcanization of the mixed components, 2% ethanol is liberated

Whereas component A (base compound ) of JOINLEADER 868 is stable in air, Component B (curing paste)is hydrolysis sensitive and must therefore not be exposed to moist air for any length of time.



Part A and B of JOINLEADER 868 each have a shelf life of at least 12 months. If stored in tightly closed original containers in a dry place at temperatures not exceeding 27°C, the “best used before end” date of each lot is shown on the product label. If the material is kept beyond the recommended shelf life, it is not necessarily unusable, but a quality control should be performed on the properties relevant to the application.



Maintenance is not necessary. If the seam of sealant is damaged, remove it with solvent. After removing the piled scale, JOINLEADER 998 2-Component Structural Silicone Sealant will conglutinate with solidified silicone sealant.



The complete technical data and presswork can be procured from JOINLEADER and its authorized agent. JOINLEADER provides adhesive and compatible test.



Part A (Base): White, grey

Part B (Curing Agent): Black



Machine use:

Part A: 180L/185L

Part B: 18L/18.5L


Hand use:

Part A: 18L

Part B: 300ml×6


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Join Leader Adhesive Co., Ltd., a leading professional manufacturer & marketer of quality adhesives & sealants, is always dedicated to the research and development of various functions and applications in adhesives for last 17 years. Join Leader commits itself to provide more economical, professional, convenient application products, services and solutions to meet the ever-increasing demand in Construction, Industry, Automobile, DIY and other areas. Meantime, in all our products and s... View detail

Basic Information

Business Type: Manufacturer, Trading Company  
Main Products: Silicone Sealant,Gasket Maker,White Glue,Acrylic Sealant,Epoxy Adhesive,Silicone Rubber Tape,Super Nail(Not Hazardous Chemicals)  
Number Of Employees: 101 - 200 People  

Trade & Market

Main Markets: South America
Mid East
Domestic Market
South Asia
Northern Europe
Western Europe
Southeast Asia
Southern Europe
North America
Eastern Europe
Central America
Total Annual Sales Volume: USD 31,920,335  
Export Percentage: 81% - 90%  
Trade Shows: 117th canton fair    

Factory Information

Factory Size (Sq.meters): 5,000-10,000 square meters  
Factory Location: Zhabei Village, Hezhuang Street, Xiaoshan District, Hangzhou City, Zhejiang Province, China  
No. of Production Lines: Above 10  
Number of R&D Staff: 5 - 10 People  
Number of QC Staff: 5 - 10 People  
Contract Manufacturing: OEM Service Offered   Design Service Offered   Buyer Label Offered  

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Verified Supplier - Join Leader Adhesive Co., Ltd.
China (Mainland) | Manufacturer, Trading Company | Contact Details
Key Strengths: Assessment Report by Bureau Veritas
Top 3 Markets: South America 25.12%, Africa 22.87%, Oceania 16.23%
Experience: Established 2005

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