HW-718 Acetoxy Silicone Structural Sealant | High-Strength Adhesive for Large Glass Panels, Skylights & Aluminum Alloy Windows
Technical Performance (ASTM C920 Certified)
Adhesion Strength: ≥1.8MPa (Glass/Aluminum)
Weather Resistance: 5,000+ hours UV exposure (No cracking/discoloration)
Curing Speed: Surface tack-free in 20 mins @25°C, full cure in 24 hours
Temperature Range: -50°C to 200°C (Stable performance in extreme climates)
Critical Applications Solving Industry Challenges
High-Risk Glass Engineering: Securely bond oversized glass panels (Up to 5m²) in skyscrapers & curtain walls.
Leakage Prevention: 100% airtight sealing for skylights & glass roofs exposed to heavy rain/snow.
Corrosion Resistance: Compatible with salt spray environments (Coastal buildings, marine facilities).
Aesthetic Durability: No yellowing or shrinkage over time, maintaining glass clarity for luxury showcases.
Material Compatibility Guidelines (Mandatory Pre-Test Recommended)
[ν]Approved Substrates:
Glass, Ceramic, Anodized/Powder-Coated Aluminum (After solvent cleaning)
Fiberglass, Stainless Steel (304/316 Grade)
[x] Incompatible Materials:
Porous Surfaces: Concrete, Cement, Plaster (Use hybrid sealants instead)
Reactive Metals: Copper, Brass, Lead (Risk of corrosion)
Continuously Submerged Areas: Water tanks, swimming pools (Use underwater-grade sealants).
Why HW-718 Outperforms Generic Sealants?
vs. Neutral Cure Sealants: 30% faster curing speed → Accelerate project timelines.
vs. Cheap Acrylic Sealants: 8x longer lifespan
vs. Construction-Grade Sealants: Precision bonding for glass/metal with 0.1mm gap control.
We use raw materials supplied by the world's leading chemical giants,
Chemical material inventory of thousands of tons or more.Have more production capacity than peers.
Fully automated static production equipment process
FINISHED PRODUCT STORAGE WAREHOUSE
APPLICATION:
CAUTION:
Uncured silicone can irritate eyes and skin. If contact is made with eyes, flush with water for 15 minutes and seek medical advice. Use in well ventilated area and keep out of reach for children.
LIMITATIONS:
1.Not for use in structural glazing applications
2.Do not use for below ground.
3.Do not use when substrate temperature is above 50ºC or surfaces that are wet, oily, greasy, dusty or dirty.
4.The surfaces coated with paint are unsuitable for sealant.
5.Do not clean or treat the sealant with materials, solvents or cleaning agents that may affect or discolor the sealant, particularly during sealant cure.
STAFF CONSTRUCTION SCENE
HEALTH AND ENVIRONMENTAL INFORMATION
To support Customers in their product safety needs, HONG-WAH has an extensive Product Stewardship organization and a team of Product Safety and Regulatory Compliance (PS&RC) specialists available in each area.
EXHIBITIONS
CARGO TRANSPORTATION
FAQ
Q1: Can you provide private customization (OEM)? What is the minimum order quantity?
A1:
OEM support: Provide full-range customization services, including:
1. Packaging customization: trademark printing, outer box design (MOQ 12,000 pieces)
2. Formula adjustment: color, curing speed, viscosity adjustment (MOQ 2 tons)
3. Certification agency: Assist in passing UL/CE/GB certification (cycle 4-8 weeks)
4. Standard order: No minimum order quantity, support mixed batch (black/white/gray/transparent can be freely combined)
Q2: Quotation time limit and price protection period? Is there a discount for large quantities?
A2:
1. Quotation validity: Formal quotation will be provided within 24 hours for routine demand (including EXW/FOB/CIF terms)
2. Price protection: Quotation validity period is 7 days, and orders over 48,000 pieces will enjoy tiered discounts (up to 10% OFF)
3. Annual agreement: Signing an annual procurement framework agreement can lock in the risk of raw material price fluctuations
Q3: Sample policy? Can the sample fee be deducted after placing an order?
A3:
1. Free samples: 1-3 free samples (model HW-718) are provided, and only the international express fee needs to be paid
2. Fee refund: Sample fee can be 100% deducted in the first order (sample receipt record must be provided)
3. Customized samples: Special color/packaging samples are subject to tooling fees (calculated according to actual cost)
Q4: Does HW-718 meet European and American building sealant standards?
A4:
International Compliance:
1.EU: Certified by EN 15651 (Building Joint Sealant), VOC≤50g/L
2.USA: Meets ASTM C920 Class 25, UL fire rating [optional]
3.China: GB 16776 Structural Sealant Standard
Q5: How do I ensure that the sealant is compatible with my substrate?
A5:
Three-step confirmation method:
1.Substrate type: Provide the material name (such as powder-coated aluminum, tempered glass)
2.Surface treatment: Inform the type of cleaning agent (silicone-containing cleaning agents are prohibited)
3.Testing service: Free delivery of compatibility test kit (including 5 common substrate test pieces)
Q6: How to verify product quality stability?
A6:
Quality control visualization:
1. Raw material traceability: Dow Chemical (DOWSIL) silicone raw material batches can be queried
2. Production traceability: Laser coding of each product (production time/production line/quality inspector)
3. Third-party monitoring: Monthly random inspection report announcement
Q7: Delivery cycle and emergency order expedited options?
A7:
Standard delivery:
1. Factory warehouse spot: delivery within 72 hours (support DDP)
2. Customized order: 20 working days (starting from the confirmation of the design draft)
3. Expedited channel: Pay 10% of the order amount to prioritize production (delivery in 3 days at the fastest)
Q8: How to get technical support in case of construction problems?
A8:
Three-level support system:
1. Online diagnosis: Send the construction video to [email protected] and get a reply within 5 hours
2. Online video guidance: Engineers in the Asia-Pacific region will reply within 8 hours (12 hours in Europe/America)
3. Compensation commitment: For orders confirmed as product problems, free replenishment + bearing the rework costs
Q9: Can you provide technical documents in localized languages?
A9:
1. Multi-language support: Provide English/French/Spanish/Russian/Arabic versions of MSDS and construction guides
2. Professional sales team: Request the technical parameter table in the language corresponding to the local country from the sales staff
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