Loctite si5660 Silicone Sealant Grey 100ml - Water & Glycol Resistant Silicone

Loctite SI 5660 Grey Silicone Sealant – 100ml

Loctite SI 5660 is a high-performance grey silicone sealant designed for gasketing and sealing applications where excellent resistance to oils, water, and glycol-based coolants is required. It cures when exposed to moisture in the air, forming a tough and flexible rubber gasket suitable for automotive and industrial use.

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Product Details

• Brand: Loctite
• Product: SI 5660 Silicone Sealant
• Colour: Grey
• Size: 100ml
• Quantity Included: 1 – Sold Individually
• Type: Water & Glycol Resistant Silicone Sealant

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Key Features & Benefits

🛡️ Water & Glycol Resistant – Designed to withstand coolant and fluid exposure
⚙️ Forms Tough Rubber Gasket – Cures into a durable and flexible seal
🚗 Excellent Oil Resistance – Suitable for demanding automotive sealing applications
🔧 Ideal for Gasketing – Perfect for replacing or supporting conventional gaskets
💪 Strong Adhesion & Flexibility – Maintains sealing performance under vibration and temperature changes
🧰 Professional-Grade Formula – Suitable for workshop and industrial use

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Typical Applications

Ideal for sealing:

• Transmissions
• Cast metal housings
• Gearbox casings
• Engine covers
• Coolant system components
• Automotive and industrial assemblies

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How It Works

Loctite SI 5660 cures on contact with atmospheric moisture, creating a flexible silicone rubber seal that resists oils, coolants, and vibration. Its grey formulation is particularly suited to automotive gasketing applications requiring long-lasting durability and fluid resistance.