LOCTITE® SI 5699 Grey RTV Silicone Gasket Maker
LOCTITE® SI 5699 is a flexible, form-in-place, room temperature vulcanizing (RTV) silicone sealant that cures at room temperature on exposure to moisture in the air to form a tough rubber gasket. This high-performance sealant is designed primarily for flange sealing with excellent oil resistance and rigid flange sealing applications.
Key Features
- Fast Curing: Tack-free after just 10 minutes
- Highly Flexible: Provides excellent sealing for all types of flanges
- Superior Resistance: Oil and water-glycol resistant, 8 times more oil resistant than standard RTV silicones
- Wide Temperature Range: Operates from -75°F to 625°F (-59°C to 329°C)
- Non-Corrosive: Safe for corrosion-sensitive electrical assemblies
- Low Odor & Low Volatility: User-friendly application
- NSF Registered: Category P1 (NSF Reg. No.: 122998)
Technical Specifications
- Chemical Type: Oxime Silicone
- Appearance: Grey paste
- Specific Gravity: 1.45 @ 20°C
- Tensile Strength: ≥2.4 N/mm² (≥348 psi)
- Cure Time: 24 hours (full cure)
- Shore Hardness: 45-75 Shore A
- Package Size: 80ml tube
Applications
Ideal for flange sealing and rigid flange sealing on transmissions, cast metal housings, and other automotive components. Can be used on flexible, machined or cast surfaces, metal or plastic. Perfect for applications requiring water-glycol resistance and high vibration environments.
Remains flexible and withstands high vibration while providing outstanding chemical compatibility and gap-filling properties.