Loctite SI 5699 – RTV Silicone Gasket Maker for Oil-Resistant and High-Temperature Industrial Sealing

✅ Loctite SI 5699 is a premium RTV (Room Temperature Vulcanizing) silicone gasket maker designed for sealing flanges, covers, and rigid metal assemblies in demanding industrial and automotive applications. It provides outstanding resistance to oil, water, vibration, and high temperatures while delivering long-lasting leak protection.

✅ The sealant cures at room temperature by reacting with moisture in the air, forming a durable and flexible silicone rubber gasket. Once fully cured, Loctite SI 5699 maintains excellent elasticity, allowing it to compensate for flange movement, thermal expansion, and surface irregularities while ensuring reliable sealing performance.

✅ Loctite SI 5699 offers excellent adhesion to aluminum, steel, stainless steel, cast iron, glass, ceramics, and many other engineering materials. It is commonly used as a replacement for paper, cork, and pre-cut rubber gaskets, simplifying assembly and reducing maintenance costs.

✅ The product provides excellent resistance to engine oil, transmission fluid, water, coolant, vibration, and a wide range of industrial chemicals. It maintains sealing integrity under continuous vibration and fluctuating operating temperatures, making it ideal for demanding industrial environments.

✅ After complete curing, the silicone gasket exhibits excellent resistance to weathering, moisture, UV exposure, and aging. Its durable flexibility helps extend equipment service life while reducing maintenance frequency and preventing leakage.

✅ Manufactured by Henkel under the trusted Loctite brand, SI 5699 is widely used in automotive manufacturing, industrial machinery, gearboxes, pumps, compressors, hydraulic equipment, marine engineering, oil & gas facilities, power generation, and general industrial maintenance.

Technical Specifications

✅ Product Name: RTV Silicone Gasket Maker

✅ Model: Loctite SI 5699

✅ Brand: Loctite

✅ Manufacturer: Henkel

✅ Origin: Depending on Henkel Manufacturing Facility

✅ Product Type: RTV Silicone Sealant

✅ Color: Grey

✅ Curing Mechanism: Moisture Cure

✅ Chemistry: Oxime Silicone

✅ Oil Resistance: Excellent

✅ Operating Temperature: -55°C to +200°C

✅ Intermittent Peak Temperature: Approximately +250°C

✅ Skin Formation Time: Approximately 10–20 Minutes

✅ Full Cure Time: Approximately 24 Hours (Depending on Bead Thickness)

✅ Flexibility: Excellent

✅ Vibration Resistance: Excellent

✅ Water and Chemical Resistance: Excellent

✅ Compatible Materials: Aluminum, Steel, Stainless Steel, Cast Iron, Glass, and Ceramics

Applications

✅ Flange Gasket Sealing

✅ Industrial Engines

✅ Gearboxes

✅ Gear Reducers

✅ Industrial Pumps

✅ Air Compressors

✅ Hydraulic Equipment

✅ Pneumatic Equipment

✅ Mechanical Covers

✅ Marine Equipment

✅ Oil & Gas Equipment

✅ Industrial Maintenance and Repair

Hotline: 0084 787900099