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Construction GUIBAO 998 Class 35 Curtain Wall Silicone Sealant

Chengdu Guibao Science & Technology Co., Ltd.,

Construction GUIBAO 998 Class 35 Curtain Wall Silicone Sealant

Brand Name : GUIBAO

Model Number : 998

Certification : ISO, SIRIM

Place of Origin : CHINA

MOQ : 2000 pcs

Price : Negotiable

Payment Terms : T/T

Supply Ability : 20000 pcs/4 working days

Delivery Time : 4 working days

Packaging Details : Cartridges (net 300ml) ,24 pieces to a carton and sausages (net 590ml),20 pieces to a carton.

Usage : Construction

Color : White,black,grey

Shelf life : 12 Months

Appearance : Smooth paste ,uniform paste

Quality : high

Feature : excellent sealing

Name : Silicone Weatherproof Sealant

Characteristic : Class 35

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Silicone Weatherproofing Sealant Class 35 for Curtain Wall

One part, neutral cure silicone sealant with excellent weatherability, ideally suited for movement joints seal.

FEATURES

Excellent weatherability, virtually unaffected by sunlight, rain, snow and ozone.

Neutral cure – suitable for use on metals, coated glass, aluminum panels, terracotta panels, concrete materials, galvanized steel and many other substrates.

Extension/compression movement capability of up to ±35 percent of the original joint width.

Excellent resistance to temperature extremes, stable and flexible over the temperature range from –50 ℃ to +150 ℃.

Excellent unprimed adhesion to a wide variety of building materials.

Easy of application-ready to use as supplied.

Good compatibility with other neutral silicone sealants.

BASIC USES

GUIBAO 998 Silicone Weatherproofing Sealant is designed for:

General weather sealing and glazing in glass curtain walls, aluminum curtain walls and terracotta curtain walls.

Sealing the joints of concretes, plastics, metals and etc.

COLOURS

GUIBAO 998 is available in black, gray, white and other customized colours.

TYPICAL PROPERTIES

These values are not intended for preparing specifications.

Test Method Property Unit Standard Result
GB/T 13477 (ISO 7390) Slump mm

≤3

≤3

0

0

GB/T 13477 (ISO 8394) Extrusion rate ml/min ≥80

856

192

GB/T 13477(ASTM D 2377) Tack free time h ≤3 1.1
GB/T 13477 (ISO 7389) Extension recovery % ≥80 90
GB 16776 (ISO 10563) Weight loss % ≤10 5.6
GB/T 13477 (ISO 8339) Modulus at 23℃

MPa

>0.4 0.84
GB/T 13477 (ISO 11600) Movement capability % ±35 ±35
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 after UV-water exposure No failure No failure

*GB: Chinese National Standard

ASTM: American Society for Testing and Materials

ISO: International Standardization Organization

SPECIFICATIONS

GUIBAO 998 is designed to meet or even exceed the requirements of:

Chinese specification GB/T 22083-2008 35HM.

Complies with ASTM C 920.

PACKAGING

GUIBAO 998 is available in disposable cartridges (net 300ml) ,24 pieces to a carton and sausages (net 590ml),20 pieces to a carton.

CURE TIME

As exposed to air, GB 998 begins to cure inward from surface. Its tack free time is about 70 minutes, the full and optimal adhesion forms in about 21 days.

SHELF LIFE

It has a shelf life of 12 months from the date of manufacture.

LIMITATIONS

GUIBAO 998 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 substrate surface temperature below 4℃ or over 50℃.

To copper, zinc or lead coated surfaces.

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.

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 GUIBAO 998 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

GUIBAO 998 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 required for work and cure places.

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.


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