Molykote® P-40 Grease: A Reliable Solution for Harsh Environment Protection

November 27, 2025

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Molykote® P-40 Grease: A Reliable Solution for Harsh Environment Protection
Product Overview

Molykote® P-40 is a metal-free, high-adhesion lubricating grease specifically designed for industrial applications exposed to moisture, corrosion, or heavy loads. Its unique formulation ensures excellent lubrication and anti-corrosion performance even under extreme temperatures (-40°C to +250°C) and harsh conditions, making it ideal for long-term use in assembly, threaded connections, bearings, gears, and marine equipment.

Key Advantages
  1. High Adhesion: Stays firmly adhered to metal surfaces even under vibration or water washout, minimizing lubrication failure.
  2. Superior Corrosion Protection: Passes 500-hour salt spray tests, resisting corrosion from seawater, chemicals, and humidity.
  3. Broad Temperature Range: Remains workable at -40°C and drip-free up to +250°C, ensuring consistent performance.
  4. Fretting Wear Resistance: Reduces micro-movement damage per DIN standards, extending component service life.
  5. Environmentally Friendly: Metal-free formulation aligns with eco-requirements and is compatible with common seals.
Typical Application Cases
  1. Case 1: Commercial Vehicle Braking Systems​

    Applied to brake linkages and guide bolts in heavy-duty trucks, Molykote P-40 ensures lasting lubrication, preventing rust and seizing caused by rain and debris, thereby reducing maintenance intervals.

  2. Case 2: Marine Platform Threaded Connections​

    Bolts on offshore platforms face high-salt environments. P-40 maintains a consistent friction coefficient (0.08–0.16), preventing loosening and corrosion for structural integrity.

  3. Case 3: Open Gear Lubrication in Mining Equipment​

    For open gears in mining machinery, P-40’s adhesion prevents dust ingress and reduces wear, while its high-temperature resistance (short-term up to 1093°C) suits high-speed operations.

Usage Guidelines
  1. Surface Preparation: Clean components thoroughly before application to remove oil or contaminants.
  2. Application Methods: Apply via brushing, grease gun, or automated systems; avoid mixing with other lubricants.
  3. Maintenance: Under continuous high temperature or contamination,定期检查并补充润滑.
Technical Assurance

DuPont lab data confirms Molykote P-40’s weld load of 3000N (DIN 51350) and wear scar of 0.94mm (800N load), verifying its high load-bearing and anti-wear properties. The product has a 60-month shelf life when stored at 0–40°C.

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