Teflono MarineGuard
Professional-grade PTFE grease for shipboard and offshore platform equipment
MarineGuard is the workhorse of the Teflono marine line, designed for daily-use applications on ships, offshore platforms, and coastal installations. Its lithium-calcium complex thickener combines the mechanical stability of lithium with the water resistance of calcium. The balanced PTFE content provides reliable lubrication without excess cost, making it ideal for high-volume marine maintenance programs.
Temp Range
-25°C — 140°C
PTFE Content
12%
Base Oil
PAO/Mineral Oil Blend
NLGI Grade
2
Technical Data Sheet
Specifications
Additives
Key Features
- Dual lithium-calcium thickener for balanced performance
- 12% PTFE content for cost-effective marine lubrication
- Excellent water washout resistance for deck applications
- EP additives protect under shock loading conditions
- Zinc oxide provides long-term corrosion protection
- Compatible with standard grease guns and centralized systems
Applications & Use Cases
Performance Characteristics
Manufacturing Recipe
Batch size: 1kg — Detailed formulation and step-by-step process
Ingredients (1kg batch)
| Ingredient | % | Grams | Role |
|---|---|---|---|
| PAO 6 Synthetic Oil | 30% | 300g | Primary base lubricant - stable, high VI synthetic |
| Group III Mineral Oil (100N) | 22% | 220g | Co-base oil - improves additive solubility and reduces cost |
| Lithium 12-Hydroxystearate | 8% | 80g | Primary thickener component - mechanical stability |
| Calcium 12-Hydroxystearate | 6% | 60g | Co-thickener - water resistance and corrosion protection |
| PTFE Micro-powder (5μm) | 12% | 120g | Solid lubricant for boundary lubrication in wet conditions |
| Zinc Oxide | 4% | 40g | Anti-corrosion pigment - protects ferrous and non-ferrous metals |
| Sulfurized Olefin EP Additive | 3% | 30g | Extreme pressure protection for shock-loaded bearings |
| Polybutene Tackifier | 4% | 40g | Adhesion promoter for vertical and exposed surfaces |
| Diphenylamine Anti-oxidant | 2% | 20g | Oxidation inhibitor for extended service life |
| Boric Acid (complexing agent) | 4% | 40g | Forms lithium-calcium complex for improved properties |
| Acetic Acid (catalyst) | 3% | 30g | Aids calcium soap formation and pH adjustment |
| Silicone Anti-foam | 2% | 20g | Controls foam in water-ingress conditions |
Process Steps
Dual Soap Preparation
Combine PAO 6 and mineral oil in the reactor. Add lithium 12-hydroxystearate and calcium 12-hydroxystearate. Add boric acid as complexing agent and acetic acid as catalyst. Begin heating with constant stirring at 500 RPM.
Saponification & Complexing
Raise temperature to drive saponification of both soaps simultaneously. The boric acid and acetic acid facilitate complex formation between the lithium and calcium soaps. Hold at peak temperature until fully reacted.
Quench & Structure Development
Add a controlled quench of additional base oil (10% of total) at 210°C to arrest crystal growth and develop the desired thickener structure. Cool at approximately 2°C per minute with continued stirring.
PTFE & Zinc Oxide Addition
At 130°C, add PTFE micro-powder and zinc oxide. Increase stirring to 1000 RPM. The zinc oxide will disperse as fine particles throughout the grease, providing passive corrosion protection.
EP & Additive Blending
At 100°C, add sulfurized olefin EP additive, diphenylamine anti-oxidant, and anti-foam agent. Finally, add polybutene tackifier - mix until the grease develops a stringy, adhesive character.
Milling & Marine Tests
Mill through a three-roll mill twice. Perform water washout test (ASTM D1264) and salt spray exposure test. Apply to a test bearing and run under water spray for 4 hours to verify performance.
QC & Marine-Grade Packaging
Full QC per marine specifications. Package in standard grease cartridges (400g), 1kg tins, and 16kg pails. Label with marine-grade requirements and batch traceability.
Required Equipment
- Pressurized reactor vessel with heating/cooling jacket
- Variable speed agitator (100-1200 RPM)
- Temperature controller and thermocouple
- Three-roll mill
- Water washout test apparatus
- Bearing test rig with water spray
- Cartridge filling machine
- PPE: Safety glasses, heat-resistant gloves, lab coat
Safety Notes
- Saponification at 210°C requires caution - risk of boil-over if water is present
- Acetic acid is corrosive - handle with acid-resistant gloves
- Zinc oxide dust should not be inhaled - use respiratory protection
- Sulfurized olefin has a strong odor - work in ventilated area
- Boric acid is a mild reproductive toxin in high concentrations - handle per MSDS
- Finished product is non-hazardous and safe for general marine maintenance
Quality Control Checks
- Cone penetration: 265-295 dmm (ASTM D217)
- Drop point: >250°C (ASTM D2265)
- Water washout @79°C: <2% (ASTM D1264)
- Water spray-off: <10% (ASTM D4049)
- Four-ball wear: <0.55 mm (ASTM D2266)
- Visual: Blue-gray, smooth, tacky grease
Where Competitors Still Lead
Full ComparisonTransparency matters — here are the specs where certain competitors outperform Teflono MarineGuard.