Cutting Fluids & Metalworking Coolants

Biobased cutting fluids and metalworking coolants from Cortec that cool, lubricate and protect parts from corrosion in one product, without chlorinated compounds, chromates or nitrites.
Water-soluble cutting fluid concentrate
Cortec EcoLine Cutting Fluid is a biodegradable coolant concentrate that replaces mineral-oil-based fluids. It cools, lubricates and inhibits corrosion, with low to no smoke at the machine.

Dilution 1:40 to 1:20, concentrate to water
pH 8.5–9.0 (1% solution); up to 24-month shelf life
No chlorinated compounds, chromates or nitrites
Machining and CNC coolant, grinding, rolling, stamping, extruding and hydrostatic testing
Available in 5-gallon pails and 55-gallon drums

Straight cutting oil and penetrant
Cortec EcoLine ELP is a 95% USDA-certified biobased, soy-based lubricant and penetrant for milling, tapping, reaming, cutting, grinding and drilling, and for freeing rusted bolts. Flash point 590°F, so it stays out of flammable-liquid hazmat. In 13 oz aerosols and 55-gallon drums.
Cutting fluid or cutting oil?
Run a water-soluble cutting fluid where cooling matters most: CNC machining centers, lathes and grinders. Reach for a straight cutting oil for heavy tapping, threading and reaming where lubricity matters more than cooling.
After machining: clean and protect
Coolant residue and fines interfere with painting, plating and assembly. Clean parts in an aqueous parts washer with a compatible industrial cleaner, then protect them with a Cortec rust preventative or VCI bags until they’re assembled or shipped.
Cutting fluid and coolant FAQs
What is the difference between cutting fluid and cutting oil?
Cutting fluid usually means a water-soluble concentrate you dilute with water. It cools very well and suits most CNC machining and grinding. Cutting oil is a straight oil used undiluted for heavy tapping, threading and reaming where lubricity matters more than cooling.
What dilution should I run EcoLine Cutting Fluid at?
Cortec specifies 1:40 to 1:20, concentrate to water. Leaner mixes suit light machining and grinding; richer mixes suit heavier cutting and longer sump life.
Will water-based coolant rust my parts?
It can if the coolant does not carry enough corrosion inhibitor or the mix runs too lean. EcoLine Cutting Fluid cools, lubricates and inhibits corrosion in one product. For parts that sit after machining, add a rust preventative or pack them in VCI bags.
How do I remove coolant residue before painting or assembly?
Wash parts in an aqueous parts washer with a compatible alkaline cleaner, rinse and dry. That removes coolant and fines so coatings and adhesives bond properly.