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Versachem Mega Blue RTV Silicone Gasket Maker 77739, 85g. Superior Oil and Waterproof: Provides excellent resistance to oil, moisture, and water for durable sealing. Oxygen Sensor Safe: Low volatility formula ensures it will not foul oxygen sensors in engines. High Strength Adhesion: Strong bonding capability for engine gaskets, valve covers, and mechanical joints. Flexible and Durable: 100% silicone rubber offers flexibility and long-lasting performance under stress. Fast Curing Time: Achieves full cure within 24 hours at room temperature. Low Odor and Non-Corrosive: Safe to use with high-temperature applications without damaging components. OEM and ODM Support: Custom branding and design services available for logo and product name.