Metal Working Fluid

Metalworking Fluids

Metalworking fluids, also known as cutting fluids, coolants, or lubricants, are essential to precision machining and grinding operations. These high-performance fluids cool, lubricate, and protect both tools and workpieces during metal cutting, milling, turning, drilling, and grinding operations. By reducing heat and friction at the cutting tool interface, they improve surface finish, extend tool life, and prevent rust and corrosion on parts and equipment.

At Petroleum Service Company, we supply metalworking fluids formulated for ferrous and non-ferrous metals and a wide range of CNC and manual operations. Whether you’re machining steel, stainless, aluminum, copper, or cast iron, our fluids are engineered to handle high-pressure and extreme-temperature applications with lasting sump life and system cleanliness.

You’ll find several types of fluids here:

• Soluble Oils: Milky emulsions rich in mineral oil that provide excellent lubricity and rust protection for moderate cutting operations.
• Semi-Synthetic Fluids: Balanced, water-based coolants offering strong cooling, lubricity, and tramp-oil rejection — ideal for multi-metal CNC machining.
• Synthetic Fluids: Clear, low-foam formulations that deliver superior cooling and corrosion resistance for grinding and precision work.

Choose the right fluid for your operation:

Each formula is designed for stability, low misting, and biostability, helping resist bacteria, fungi, and odor while ensuring compliance with occupational safety and health standards. Proper maintenance ensures longer fluid life, better performance, and safer working conditions. This includes monitoring concentration with a refractometer, maintaining correct pH, and controlling tramp oil.

Explore our full selection of metalworking fluids below to find the best fit for your operation. PSC offers the products, data sheets, and technical support you need to keep your machines clean, your parts precise, and your shop running efficiently.