One part, neutral cure silicone
sealant with excellent weatherability, ideally suited for movement joints sea.
GB 998 is designed to meet or even exceed the requirements of
- Chinese specification GB/T 22083-2008 35HM
- Complies with ASTM C 920
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.
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 GB 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.
LIMITATIONS
GB 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
SAFETY INFORMATION
- GB 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.
One part, neutral cure silicone
sealant with excellent weatherability, ideally suited for movement joints sea.
GB 998 is designed to meet or even exceed the requirements of
- Chinese specification GB/T 22083-2008 35HM
- Complies with ASTM C 920
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.
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 GB 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.
LIMITATIONS
GB 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
SAFETY INFORMATION
- GB 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.
One part, neutral cure silicone
sealant with excellent weatherability, ideally suited for movement joints sea.
GB 998 is designed to meet or even exceed the requirements of
- Chinese specification GB/T 22083-2008 35HM
- Complies with ASTM C 920
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.
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 GB 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.
LIMITATIONS
GB 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
SAFETY INFORMATION
- GB 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.
Malaysia
Australia
Hong Kong SAR
Indonesia
New Zealand
Philippines
Singapore
