MS-791 Weather Proof Neutral Silicone Sealant

DESCRIPTION

MS-791 Weather Proof Neutral Silicone Sealant is a one-component, neutral curing silicone sealant with excellent adhesion, weatherability and elasticity for weather sealing in curtain wall and building facades,especially suits applications in the areas with large difference in temperature and low humidity. It easily extrudes in any weather and quickly cures at room temperature by reaction with moisture in the air to form a durable silicone rubber seal. Because of its excellent adhesive qualities, MS-791 provides the long-term performance required for demanding weatherproofing applications. It’s recommended for use on both new construction and renovation projects.

CHARACTERISTICS

1. One-component, neutral-cured with excellent adhesion, weatherability and elasticity for weather sealing in curtainwall and building facades.

2. Excellent weatherability and high resistance to ultraviolet radiation, heat and humidity, ozone and temperature extremes.
3. It has good adhesion and compatibility with most building material.
4. Remain flexible over a temperature range of -40℃ to 150℃.

5. It is capable of taking extension, compression, transverse and longitudinal movements.

MAIN USE

1. Professional used for curtain wall non-structural lap and docking sealing, including glass, aluminum plate, aluminum plastic plate, steel structure body and other high-rise curtain wall weather sealing.
2. Weather sealing in metal (not including copper), glass, stone, aluminium panel and plastic.

3.It is suitable for general glazing and for general weatherproof joints between different substrates including glass, aluminum, enamel, brick, concrete and ceramic tiles etc.

4. Sealing for coated glass, with the materials mainly made from polycarbonate and large glass.

5. Sealing for windows and doors.

6. Excellent adhesive to most common building material.

USE INSTRUCTIONS

1. Clean with solvents such as toluene or acetone to keep the substrate surfaces completely clean and dry.

2. Primer is generally not required on non-porous surfaces, but maybe necessary for optimal sealant on certain porous surfaces.

3. For better appearance, cover outside of joint areas with masking taps before application.
4. Cut seal on top of cartridge. Screw on nozzle and cut the nozzle at 45°angle to the desired size and extrudes sealant to joint areas.
5. Tool immediately after sealant application and remove masking tape before sealant skins.

USE RESTRICTIONS

1. Unsuitable for curtain wall structural adhesive.
2. Unsuitable for the airproof location, because it is required to absorb moisture in air to cure for the sealant.
3. Unsuitable for the frosty or moist surface.
4. Unsuitable for the continually soggy place.
5. Can’t be used if the temperature is below 4°C or above 40°C on the surface of the material.

SAFETY RECOMMENDATION

1. The silicone sealant will release volatile compound during curing, it may be bad to health if you breathe in the volatile compound for a long time. So please ensure adequate ventilation at the workplace or curing area.
2. The cured silicone sealant will not release any harmful substance and cause any damage to human body.
3. Keep uncured silicone sealant beyond children's reach. If getting into eyes, wash with running water for several minutes, and then consult a doctor.

COLOR

Clear, white, black, grey and other colors based on customer's requirement.

PACKING

It is available in 280ml or 300ml disposable plastic cartridges and 24pcs/ctn, or 590ml sausages and 20pcs/ctn.

TRANSPORTATION

This product is transported by non-dangerous goods.

STORAGE

1. Keep in dry, cool and well-ventilated area. Keep away from heat source and direct sunlight during storage.

2. When stored at the temperature of 5℃-25℃ in the original unopened container, it has a shelf life of 12 months from the date of manufacture. MS-791 clear sealant has a shelf life of 9 months from the date of manufacture.

STANDARD
GB/T 14683-I-GW-35HM

TECHNICAL DATA SHEET (TDS)

The following data are for reference purpose only, not intended for use in preparing specifications.