SR681 High Quality Premium Firestop Silicone Sealant
SR681 Silicone Sealant is a gun-grade, single component, neutral cure, firestop silicone sealant. Excellent adhesion for most building materials, Including glass, metal, masonry, brick, concrete, marble, granite, wood, etc. The fire resistance performance reaches the highest grade A3 of GB 23864, and the flame retardant performance reaches the highest level of V-0 of GB/T 2408.
FEATURES & BENEFITS:
• Fire resistance tested up to 3 hours in accordance with GB 23864
• Halogen-free, does not emit toxic gases when burning
• One part and easy to use, good extrudability and thixotropy at 4 °C ~ 40 °C
• No sag and no collapse
• Excellent primer-free adhesion to most porous and non-porous substrates
•Excellent weatherability, virtually unaffected by sunlight, rain, snow, ozone and extreme temperatures
• Reliable durability, the cured sealant maintains elasticity at temperatures between -50 °C and 150 °C without hardening, cracking and chipping
APPLICATION:
• Fire-proof sealing for various types of door and window assembly and door and window installation.
• Sealing of pipe and cable penetrations in fire rated public or residential constructions.
• Waterproof and moisture proof sealing for hotel, theatre and other public places where a fire rating is required.
• Fireproof and flame-retardant seal for indoor partition wall and interior decoration.
• Many other architectural and industrial uses.
TECHNICAL SPECIFICATIONS AND STANDARDS:
SR681 Silicone Sealant meets or exceeds the requirements of:
• GB 23864 A3
• GB/T 2408 V-0
• GB/T 24267
QUALITY ASSURANCE:
SR681 Silicone Sealant has passed ISO9001/ISO14001 management system certification, and strictly in accordance with ISO9001 quality system requirements for production and control of product quality.
COLOR:
• Black, White, Gray or other colors required by the customers.
PACKAGING INFORMATION:
SR681 Silicone Sealant is supplied in 300 ml disposable plastic cartridges and 200L drum bulk packaging.
USABLE LIFE AND STORAGE:
When stored at or below 27°C in the original unopened containers, it has a usable life of 12 months from the date of production.
LIMITATIONS:
• Can not be used as a structural sealant
• Should not be used in totally confined spaces because the sealant requires atmospheric moisture for cure
• Should not apply when surface temperature lower than 5°C or exceeds 40°C
• Not suitable for frosted or wet surfaces
• Should not be used in below-grade applications
• Not suitable for continuous flooding or wet places all year round
• Not suitable for all materials that bleed oils, plasticizers or solvents, green or partially vulcanized rubber gaskets or tapes
• Do not touch any sealant that may release acetic acid
• Should not be used If the sealant is intended to be painted
HOW TO USE:
Cleaning
Ensure that all surfaces are clean, dry, sound and free from frost. Clean all joints of release agents, water repellents, laitance, dust, dirt, old sealants and other contaminants which could disable adhesion. Metal surfaces should be cleaned and degreased by wiping with a suitable solvent using an oil- and lint-free cloth. It should not be applied to surfaces that are below 5°C as it is impossible to guarantee a dry, frost-free surface at these temperatures
Primer
SR681 Fire Barrier Silicone Sealant is available for most common building materials without primer. If you are unsure whether the substrate should be primed, please contact our technical service department. For optimum adhesion, it is best to use a primer for cement and concrete.
Backing material
Backer materials have been evaluated in various joint designs, these being closed-cell polcorningyethylene foam backer rod, ceramic fiber and mineral wool. In penetration sealing applications, mineral wool has been evaluated.
Mask Adjacent Surfaces With Masking Tape
Masking will ensure a clean, neat appearance and reduce clean up by protecting surrounding areas from excess sealant.
Tooling
Tool the surface of the joint before the sealant forms a skin to provide a smooth even finish and to ensure the sealant good contract with substrate. Remove masking tape immediately after tooling and before the sealant skins. After a skin has formed, do not touch the joint for 48 hours.
PRECAUTIONS:
• Please read the safety data sheet of this product prior to use
• Avoid contact with eyes before curing. If contact with eyes, rinse with plenty of water and consult a doctor
• Pay attention to ventilation in the working areas
• Uncured products should avoid contact with children
SR681 Silicone Sealant is a gun-grade, single component, neutral cure, firestop silicone sealant. Excellent adhesion for most building materials, Including glass, metal, masonry, brick, concrete, marble, granite, wood, etc. The fire resistance performance reaches the highest grade A3 of GB 23864, and the flame retardant performance reaches the highest level of V-0 of GB/T 2408.
FEATURES & BENEFITS:
• Fire resistance tested up to 3 hours in accordance with GB 23864
• Halogen-free, does not emit toxic gases when burning
• One part and easy to use, good extrudability and thixotropy at 4 °C ~ 40 °C
• No sag and no collapse
• Excellent primer-free adhesion to most porous and non-porous substrates
•Excellent weatherability, virtually unaffected by sunlight, rain, snow, ozone and extreme temperatures
• Reliable durability, the cured sealant maintains elasticity at temperatures between -50 °C and 150 °C without hardening, cracking and chipping
APPLICATION:
• Fire-proof sealing for various types of door and window assembly and door and window installation.
• Sealing of pipe and cable penetrations in fire rated public or residential constructions.
• Waterproof and moisture proof sealing for hotel, theatre and other public places where a fire rating is required.
• Fireproof and flame-retardant seal for indoor partition wall and interior decoration.
• Many other architectural and industrial uses.
TECHNICAL SPECIFICATIONS AND STANDARDS:
SR681 Silicone Sealant meets or exceeds the requirements of:
• GB 23864 A3
• GB/T 2408 V-0
• GB/T 24267
QUALITY ASSURANCE:
SR681 Silicone Sealant has passed ISO9001/ISO14001 management system certification, and strictly in accordance with ISO9001 quality system requirements for production and control of product quality.
COLOR:
• Black, White, Gray or other colors required by the customers.
PACKAGING INFORMATION:
SR681 Silicone Sealant is supplied in 300 ml disposable plastic cartridges and 200L drum bulk packaging.
USABLE LIFE AND STORAGE:
When stored at or below 27°C in the original unopened containers, it has a usable life of 12 months from the date of production.
LIMITATIONS:
• Can not be used as a structural sealant
• Should not be used in totally confined spaces because the sealant requires atmospheric moisture for cure
• Should not apply when surface temperature lower than 5°C or exceeds 40°C
• Not suitable for frosted or wet surfaces
• Should not be used in below-grade applications
• Not suitable for continuous flooding or wet places all year round
• Not suitable for all materials that bleed oils, plasticizers or solvents, green or partially vulcanized rubber gaskets or tapes
• Do not touch any sealant that may release acetic acid
• Should not be used If the sealant is intended to be painted
HOW TO USE:
Cleaning
Ensure that all surfaces are clean, dry, sound and free from frost. Clean all joints of release agents, water repellents, laitance, dust, dirt, old sealants and other contaminants which could disable adhesion. Metal surfaces should be cleaned and degreased by wiping with a suitable solvent using an oil- and lint-free cloth. It should not be applied to surfaces that are below 5°C as it is impossible to guarantee a dry, frost-free surface at these temperatures
Primer
SR681 Fire Barrier Silicone Sealant is available for most common building materials without primer. If you are unsure whether the substrate should be primed, please contact our technical service department. For optimum adhesion, it is best to use a primer for cement and concrete.
Backing material
Backer materials have been evaluated in various joint designs, these being closed-cell polcorningyethylene foam backer rod, ceramic fiber and mineral wool. In penetration sealing applications, mineral wool has been evaluated.
Mask Adjacent Surfaces With Masking Tape
Masking will ensure a clean, neat appearance and reduce clean up by protecting surrounding areas from excess sealant.
Tooling
Tool the surface of the joint before the sealant forms a skin to provide a smooth even finish and to ensure the sealant good contract with substrate. Remove masking tape immediately after tooling and before the sealant skins. After a skin has formed, do not touch the joint for 48 hours.
PRECAUTIONS:
• Please read the safety data sheet of this product prior to use
• Avoid contact with eyes before curing. If contact with eyes, rinse with plenty of water and consult a doctor
• Pay attention to ventilation in the working areas
• Uncured products should avoid contact with children