Loctite SI 5900 Black RTV Silicone Sealant 300ml Cartridge
Loctite SI 5900 is a high-performance, silicone-based gasketing sealant and adhesive. Designed for the sealing and bonding a wide variety of materials. It is commonly used in automotive, manufacturing, and construction projects due to its excellent resistance to extreme temperatures, weather, and chemicals. Loctite SI 5900 is particularly noted for its ability to form flexible, waterproof seals with good resistance to oil, moisture, vibration or movement.
Technical Information
- Commodity Code 32141010
- Country of Origin Italy

Data Sheets
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Specifications
Please Note: Specifications and approvals are subject to change at any time. Users should always consult their AMM or the OEM when selecting products to ensure items have the release needed. Only specifications listed on the order confirmation will be certified on the Silmid CofC.
Product Information
Loctite SI 5900 is a low strength, moisture-cured, thixotropic silicone based paste. Typical applications include stamped sheet metal covers (timing covers and oil sumps). It exhibits a rapid skin-over time of 15 min and is suitable for gaps up to 1 mm. As a single component it requires no mixing.
Features:
- Good oil resistance
- Withstands joint movement
- Adheres to metal, plastic, glass and ceramic materials
- Reduces migration of liquid after application
Additional Content
Shipping information
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