Gasketing Product - multi-purpose flexible silicone sealant. Ideal for use on flexible flanges, machined or cast surfaces, metal or plastic. LOCTITE SI 5926 is a multi-purpose flexible silicone sealant and cures on exposure to moisture in the air to form a tough rubber gasket. This product resists aging, weathering and thermal cycling without hardening, shrinking or cracking. Typical applications include valve covers, timing gear covers, differential covers, oil pans, transmission pans, water pumps, and thermostat housings. This product is typically used in applications with an operating temperature range of -54 °C to 204 °C. Your benefits Multi-purpose flexible silicone sealant. Can be used on metal, plastic and painted parts Resists vibration, thermal expansion and contraction Operating temperature range of -54 °C to +150 °C.