Silicone Structural Glazing Adhesive Sealant (Single Component)

• CAS No.: N/a
• Formula: Mixture
• EINECS: N/a
• Bonding Function: Structural Adhesive
• Morphology: Viscous Paste
• Application: Automobile, Construction, DIY
• Model NO.: SR721
• Material: Silicone
• Classification: Room Curing
• Main Agent Composition: Siloxane
• Characteristic: Structural Bonding
• Transport Package: 12 or 24 Cartridges Per Carton
• Specification: 300 mL
• Trademark: HITAKOL
• Origin: China
• HS Code: 3506100010
• Production Capacity: 10000 Cartons/Day

Product Description

SR721 Silicone Structural Glazing Adhesive Sealant

SR721 Silicone Structural Sealant is a one component, neutral curing,architectural-grade silicone sealant specifically designed for structural glazing application. It requires contact with air as it reacts with atmospheric moisture to cure to a tough and flexible silicone rubber. It can be easily extruded under a wide temperature range. The cured sealant is not affected by sunlight, rain, snow, extreme high and low temperatures. Excellent weatherability allows it to remain physically unchanged even in severe weather conditions.

FEATURES & BENEFITS:
• Meet the technical standards of GB16776
• One component, ready to use
• Neutral curing, non-corrosive
• Excellent bonding properties for most building materials
• Excellent mechanical properties
• High tensile strength which makes it suitable for structural bonding applications
• Excellent high and low temperature resistance after complete curing: -50 ° C to 150 ° C
• Excellent weatherability and high resistance to ultraviolet radiation, heat and humidity, ozone and temperature extremes
•Good compatibility with other neutral silicone sealant

APPLICATIONS:
• Structural assembly of glass curtain wall
• Structural assembly of aluminum panel curtain wall
• Structural assembly of terracotta panel curtain wall
• Structural assembly of stone & porcelain panels
• Structural assembly of metal structure engineering
• Structural assembly of the lighting roof
• Secondary seal in insulating glass units
• Bonding and sealing for wind pressure resistant glass, such as automobiles and ships
• Many other architectural and industrial uses

TECHNICAL STANDARDS:
SR721 Silicone Structural Sealant meets or exceeds the test requirements of:
• GB 16776-2005
• ASTM C1184
• ETAG 002

QUALITY ASSURANCE:
• This product has passed ISO9001/ISO14001 management system certification, and strictly in accordance with ISO9001 quality system requirements for production and control of product quality.

COLOUR:
• Black, gray, white or other colors required by the user

PACKAGING INFORMATION:
• SR721 Silicone Structural Sealant is supplied in 300 ml disposable plastic cartridges,  600 ml foil sausages and 200L drum packaging.

USABLE LIFE AND STORAGE:
• When stored at or below 27°C in the original unopened containers, SR721 Silicone Structural Sealant has a usable life of 12 months from the date of production.

LIMITATIONS:
• Not suitable for use in In totally confined spaces as the sealant requires atmospheric moisture for cure
• When the surface temperature of the substrate is lower than 10 °C or exceeds 40 °C, it is not suitable for working.
• Not suitable for frosted or wet surfaces
• Not suitable for continuous flooding or wet places all year round
• Not suitable for all materials that that bleed oils, plasticizers, or solvents materials such as
impregnated wood, oil-based caulks, green or partially vulcanized rubber gaskets or tapes
• Can not be used in horizontal floor joints where abrasion and physical abuse are likely to be encountered
• Do not contact with any sealant that may release acetic acid
• Can not be used where paint is required
• Can not be used on surfaces that are in direct contact with food

CONSTRUCTION PROJECT TECHNOLOGY SERVICES:
• Drawing review
Prior to the application of the SR721 silicone structural sealant, the joint design drawings for the silicone structural sealant must be approved by Hitakol's technician and submitted a written report.
• Bonding test
Hitakol will makes the tests through our standard laboratories to assess the bonding properties of our products and materials selected (such as glass, metal, etc.), and submit the results of the experiments, product recommendations and surface cleaning methods to customers in writing.
• Compatibility test
Material incompatibility can cause discoloration of the sealant and even loss of cohesiveness. In order to avoid such problems and ensure the compatibility of the material with the product, we will also test the  compatibility of auxiliary materials (such as backer rod, joint filler and double-sided tapes, etc.) with SR721 silicone structural sealant.

Materials or site samples used by the customer for the project must be provided to us for adhesion and compatibility testing.

HOW TO USE:
• Surface preparation
Thoroughly clean all substrates to be bonded before using this product to remove all foreign matter and contaminants such as grease, oil, dust, water, frost, surface dirt, old sealants or compounds and protective coatings. Metal, glass and plastic must be cleaned with solvent according to two rag cleaning methods. In all cases, the solvent must be wiped clean with a clean, lint-free cloth. Do not use detergent or soap with water.
• Primer
SR721 silicone structural sealant generally does not require a primer. However, if the adhesion test indicates that a primer is required, the primer is applied to the interface with a clean, lint-free cloth before applying the sealant. Apply a thin layer to the surface and allow it to dry. A test must be performed before using the sealant to determine if a primer is required.
• Accessory selection
At the bottom of the joint, open-celled polyurethane foam, closed cell polyethylene foam or polyolefin material can be used as the backer rod, and as for the shallower joint which cannot accommodate the foam rod, a low-viscosity polyethylene tape can be used to control the depth of sealant.
• Masking and tooling
To ensure that the surface of the substrate is clean and tidy after application, it is necessary to cover it with tape near the joint. Do not allow the making tape to touch the surface where the sealant will be applied. After the tooling work is completed, the cover tape should be removed immediately.

APPLYING SEALANT:
• Install gasket material or joint filler material, glass support blocks, gaskets and tape as required by the design. SR721 silicone structural sealant is continuously squeezed into the joint, and the sealant is flattened on the backing material and the joint surface with appropriate force. Tooling must be finished before skin forming. It is recommended to use a convex tool to trim the sealant surface into a concave shape. Do not use soap and water as an auxiliary material for tooling. Remove masking tape as soon as the tooling is finished.

PRECAUTIONS:
• Before using, please read the safety data sheet of this product for information on the safe use of the product.
• 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 construction and curing areas
• Uncured products should avoid contact with children

 

Product name:	SR721 Silicone Structural Sealant
Quality:	Professional
Customer's brand:	Acceptable
Sample test:	Free to provide
Color Available:	White, Black, Grey, etc
Delivery time:	7~15 days
Packaging:	12 pieces/carton or 24 pieces/carton
Loading quantity:	1700 ~ 2000 cartons/ 20 ft container  ( 24 cartridges/ carton)
Pallets packaging:	Acceptable