Dowsil 732 Alternative GP Silicone Sealant
Dow Corning 732 equivalent GP Silicone is a one-component, acetic-curing, elastic sealant. It cures by absorbing moisture from the air and has good adhesion to most building materials (such as glass, ceramics, metals, and concrete) without causing corrosion. Its key feature is the addition of a highly effective anti-mold agent in the formula, which effectively prevents the sealant from turning black, discoloring, and degrading in performance due to mold growth in humid environments.
Our gp silicone sealant is designed for reliable sealing, bonding, and gap filling in construction and home improvement projects. It provides excellent adhesion, waterproof performance, and long-term flexibility for both indoor and outdoor applications.
Applications of Dow Corning 732 equivalent:
- Window and door sealing
- Bathroom and kitchen waterproof sealing
- Glass and aluminum joint sealing
- General building gap filling
- Indoor and outdoor waterproofing
Features:
- Strong adhesion to glass, aluminum, ceramic, and plastic
- Waterproof and weatherproof sealant
- UV resistant and anti-aging performance
- Flexible, crack-resistant, and long-lasting
- Easy to apply with smooth extrusion
- Suitable for construction and DIY projects
Specifications:
| Property | Value |
|---|---|
| Base | Silicone Polymer |
| Cure Type | Acetoxy |
| Skin Time | 5–15 minutes |
| Full Cure Time | 24 hours |
| Temperature Resistance | -50°C to +205°C |
| Elongation | ≥ 300% |
| Shelf Life | 12 months |
Colors & Packaging：
Available Colors: Clear, White, Black, Grey, Custom Colors
- 280ml / 300ml Cartridge
- 590ml Sausage
- OEM & Private Label Available
How to apply Dow Corning 732 equivalent GP:
Step 1: Surface Preparation
Proper preparation ensures maximum adhesion for your GP silicone.
Remove Old Sealant: Use a utility knife to scrape away all moldy or degraded residue.
Deep Clean: Wipe the gap with alcohol or a cleaning agent to remove dust and oil. A clean surface is vital for a long-lasting bond.
Dry Thoroughly: Ensure the area is bone-dry. Use a hairdryer in damp spots like bathrooms.
Apply Masking Tape: Place tape along both edges of the joint to guarantee a straight, clean finish.
Step 2: Application and Smoothing
The technique used to apply Dow Corning 732 determines the durability and aesthetics of the seal.
Prepare the Nozzle: Cut the tube nozzle at a 45 degree angle, keeping the opening between 3-5 mm.
Even Application: Hold the caulking gun at a 45 degree angle. Apply steady pressure as you move along the gap to prevent air bubbles.
Tooling: Within 5–10 minutes, use a scraper or a dampened finger to smooth the bead. This forces the GP silicone into the gap for a tighter seal.
Remove Tape: Peel off the masking tape immediately after smoothing while the sealant is still wet to avoid jagged edges.
Step 3: Curing and Final Inspection
Patience is key to ensuring the GP silicone achieves its full protective properties.
Wait to Dry: Let the sealant cure for at least 24 hours. Keep the area ventilated and avoid contact with water during this period.
Check the Seal: Once cured, the GP silicone should feel elastic and firmly bonded to both sides of the substrate without gaps or peeling.
FAQ:
Q1: Can your GP Silicone Sealant completely replace Dowsil 732 / Dow Corning 732?
Answer: Yes. Our General Purpose (GP) Silicone Sealant is formulated with 100% acetoxy-cure silicone rubber, matching the core physical, chemical, and mechanical properties of Dowsil 732.
Q2:Is this Dowsil 732 alternative available in the same standard colors?
Answer: Yes, to ensure a perfect match for your existing production lines, our GP silicone sealant comes in the standard color spectrum matching Dowsil 732, including Clear, White, Black, and Gray. Custom colors can also be manufactured for bulk OEM orders.
Q3: Can I get a free sample of your GP Silicone to test against Dowsil 732 before placing a bulk order?
Answer: Absolutely. We provide free samples for your testing and performance benchmarking against Dowsil 732. please contact our sales today to arrange your sample shipment.
Reminder:
Application Environment: Please apply within a temperature range of 5℃ to 40℃ and ensure good ventilation.
Safety First: Avoid contact with skin and eyes. If contact occurs, immediately rinse with plenty of water; if splashed into eyes, seek medical attention immediately.
