LOCTITE® SI 5900 is a moisture-cured, heavy-bodied RTV silicone form-in-place flange sealant designed to provide excellent resistance to oil and joint movement.
Its high-viscosity formulation allows it to withstand in-line, low-pressure testing before curing begins, making it ideal for production environments. Typical applications include stamped sheet metal covers, and it can seal gaps up to 1 mm (0.04") on metal, plastic, glass, and ceramic substrates.
The sealant has a skin-over time of approximately 15 minutes and forms a durable seal that will not shrink, compress, crack, or relax, even when exposed to oil or joint movement.
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Instant-seal, oil-resistant RTV silicone sealant for flexible flanges
Features
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Excellent oil resistance
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Thixotropic for easy and controlled application
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Adheres to metal, plastic, glass, and ceramic surfaces
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Gap filling capability up to 1 mm (0.04")









