Marine Port Industry
Waterproof Silicone Grease for Diving Equipment Bearings
2026-08-12
Case Study: Lubrication Solution for Diving Equipment Bearings
Submersible equipment operates in environments characterized by high deep-sea pressure, seawater corrosion, and extreme temperature fluctuations. Critical components (thrusters, motors, sealed bearings) are subject to the following:
1. Poor grease adhesion makes the lubricant prone to failure under seawater pressure.
2. Seawater causes grease emulsification, destroying its original chemical structure.
3. Salt infiltration leads to bearing rust and seizure.
4. Difficulty with cold starts increases power consumption.
5. High temperatures generated during high-speed operation soften the grease, leading to leakage.
6. Incompatibility between the grease and seal materials causes chemical reactions that compromise sealing performance, allowing seawater ingress.
7. Failures result in frequent maintenance, mission interruptions, and significant economic losses.
With 20 years of experience in specialty lubricant R&D, FRTLUBE has developed SG502—a highly adhesive, waterproof silicone grease designed for the industry that combines lubrication, waterproofing, rust prevention, and sealing capabilities.
Performance
Validation through a 20-hour continuous pressure simulation test (equivalent to a depth of 300 meters) has demonstrated stable equipment operation and the retention of sufficient grease. For diving equipment intended for depths exceeding 350 meters, comprehensive, customized testing is available:
✓ 72-hour seawater immersion at a pressure equivalent to 350 meters depth
✓ Tests for low-temperature startup load, long-term full-load operation, bearing rust prevention, and seal compatibility. Material and operational condition tests are conducted prior to mass production to mitigate field risks.
Key Advantages
1. Excellent Adhesion: A dense oil film resists high-pressure wash-off and prevents seawater corrosion.
2. Rust Prevention & Wear Resistance: Protects bearings against salt corrosion and prevents seizing.
3. Stable Operation (-20°C to 80°C): Ensures smooth cold starts and prevents dripping or leakage at high temperatures.
4. Seal Compatibility: Lubricates O-rings/gaskets and seals gaps. Please conduct compatibility testing prior to use.
Applications
- Thrusters and motor bearings for ROV/AUV diving equipment
- Sealed bearings for deep-sea pumps and transmission systems
- Waterproof lubrication for gaskets and O-rings
- Offshore wind power and deep-sea sampling equipment
Standard greases often fail to meet the demands of specialized equipment. FRTLUBE tailors grease formulations based on seal materials, operating environments, and equipment parameters. We optimize compatibility, temperature resistance, water resistance, chemical resistance, and pressure resistance to effectively prevent grease leakage, thickening, embrittlement, and premature seal aging.
Contact FRTLUBE to obtain solutions and samples, and to reduce maintenance costs and equipment failure rates.
Tags：
Marine underwater robot lubricant, ROV thruster anti-rust grease, 300m deep-sea silicone grease, AUV motor bearing lubricant, seawater-resistant lubricant, subsea sealing grease, FRTLUBE Specialty Lubricants, deep-sea anti-corrosion grease