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When your project demands a reliable, fast-setting seal for glass, aluminium, or general sheet metal work, you need a sealant that performs. SA Contractors Silicone delivers a rapid-curing, flexible bond that withstands the elements. It skins quickly, allowing for efficient tooling and ensuring your general glazing and sealing jobs are finished right, the first time.
This is a one-part, 100% acetic cure silicone adhesive/sealant designed for general-purpose glazing and sealing applications. Its formulation focuses on long-term reliability where exposure to weather and UV is constant. Unlike slower-curing alternatives, its acetic cure provides rapid skin time, making it efficient on-site. The sealant retains its superior physical properties even after years of high and low temperature exposure, preventing premature seal failure and costly callbacks.
Prepare surfaces by ensuring they are clean, dry, and free of dirt, grease, oil, rust, and water. Use white spirits or mechanical cleaning with a lint-free cloth; avoid soap or detergent. Once surfaces are clean, cut the nozzle to the desired bead width at a 45-degree angle. Apply the sealant with a gun and tool it immediately, ideally within the 5-10 minute skin time. For a clean finish, use masking tape and remove it before the sealant skins. Uncured sealant cleans up readily with mineral turpentine.
For joints, follow the 'half-width, half-depth' rule: joint depth should be half the width, with a maximum depth of 10mm. Ensure joint width is no less than 4mm. Use a closed-cell polyethylene backer rod to control depth and prevent three-sided adhesion, which is crucial for achieving the ±25% movement capability. If the joint is too shallow for a backer rod, use a polyethylene tape bond breaker.
No, SA Contractors Silicone is not recommended for use with concrete or marble. Its acetic cure chemistry can react with these and other sensitive substrates, potentially causing staining or adhesion issues. Refer to the product limitations for suitable applications.
SA Contractors Silicone skins in 5-10 minutes at 25°C and 50% relative humidity. Full cure for a 10mm deep joint takes 5-7 days under the same conditions. This allows for prompt tooling and quick initial protection.
No, this silicone sealant cannot be painted. Paint will not adhere correctly to the cured silicone surface. If a paintable finish is required, an alternative sealant product should be chosen.
Joint width and depth should be no less than 4mm. Maximum joint width should not exceed 25mm, with joint depths being half the width and a maximum of 10mm. Use a closed-cell polyethylene foam rod for backing or polyethylene tape as a bond breaker to control depth.
| Application | Key benefit | Primary trades |
|---|---|---|
| General purpose glazing of frames, panels, and shop fronts | Reliable, long-term weatherproofing with excellent UV resistance. | Glaziers, Builders |
| Sealing environmental and refrigerated rooms | Maintains sealed environments across a wide operating temperature range (-62°C to 180°C). | HVAC Technicians, Cold Room Installers |
| Sealing sheet metal, skylights, ventilators, and air-conditioning units | Forms durable seals on metal substrates, resisting weathering and UV degradation. | Sheet Metal Workers, HVAC Installers |
| Assembly of metal and plastic signs | Strong adhesion to common sign materials like aluminium and many plastics. | Sign Manufacturers, Installers |
| General external weatherproofing | Outstanding weatherability and ±25% joint movement capability for exposed applications. | Builders, Maintenance Contractors |
| Application | Key benefit | Primary trades |
|---|---|---|
| Commercial Glazing | Excellent adhesion to glass and aluminium frames. | Glaziers |
| HVAC & Sheet Metal | Seals skylights, ventilators, and air-conditioning units. | HVAC Technicians, Roofers |
| Sign Assembly | Bonds metal and plastic signs with high tensile strength. | Signage Contractors |
| Cool Room Construction | Operates effectively in environments from -62°C to 180°C. | Specialist Builders |
Warning
This product emits Acetic Acid during curing. Causes skin irritation and serious eye irritation.
Wear safety shoes, overalls, nitrile gloves, and safety glasses. Always wash hands before eating, drinking, or using the toilet.
Use in a well-ventilated area and avoid breathing in vapour during application and cure.
Store in a cool, dry, well-ventilated place, out of direct sunlight, and away from foodstuffs. Keep containers closed when not in use. Shelf life is 12 months if stored below 25°C. Dispose of material and containers in accordance with local regulations.
Proper substrate preparation is critical for long-term adhesion and performance. Ensure all surfaces are clean, dry, and free from contaminants.
Surface prep: Surfaces must be clean, dry, and free of dirt, grease, oil, rust, and water. Use white spirits or mechanical cleaning with a lint-free cloth. Do not use soap or detergent. For plastics, contact Sealants Australasia for specific cleaning solvent recommendations. For remedial work, completely remove all existing sealant.
Primer: Optional for specific surfaces. Allow any primer to dry fully before sealant application. Test adhesion if unsure of substrate compatibility or primer requirement.
| Property | Value |
|---|---|
| Cure Method | Acetoxy |
| Colours | Translucent, White, Black |
| Sag/Slump | Non-Slump (0.1%) |
| Hardness (ASTM D2240) | 28 Shore A |
| Tensile Strength | 1.7 MPa |
| Dynamic Joint Movement | ±25% |
| Skin Time @25°C/50% RH | 5-10 min |
| Cure Time 10mm @25°C/50% RH | 5-7 Days |
| Operating Temperature | -62°C to 180°C |
| Specific Gravity | 1.04 |
| VOC Compliance | 5 Star VOC Compliant |
Here are some common examples on where SA Contractors Silicone Sealant used by our customers.
