Sustainability, environmental impact and energy efficiency are more important than ever. There is increasing consumer demand for eco-friendly, bioderived and long-life lubricants. Z&S products offer unique features that mineral oil cannot deliver, and are used when food safety, fire resistance,
extreme operating conditions or environmental protection is essential..


Browse the world’s largest portfolio of advanced, lubricant-grade
synthetic ester base stocks, all designed to deliver best-in-class
performance. Synthetic esters are the most versatile of all lubricant base stocks, and can be optimized for nearly any application

Hydraulic Fluids

Inherently high viscosity index, low heat of combustion and low eco-toxicity enable synthetic esters to deliver a number of critical performance features that mineral oil cannot. Many synthetic esters can be selected to achieve food grade, fire resistant or environmentally friendly certifications while meeting all of the requirements for high performance lubrication, biodegradability and low temperature fluidity.


  • Wide temperature operating range
  • High flash & fire point, fire resistance
  • Low compressibility
  • Oxidative and thermal stability
  • Excellent lubricity
  • Biodegradability
  • Seal conditioning
  • High viscosity index for pump efficiency


  • Fire-resistant (HFDU) oils
  • Mobile construction equipment
  • Marine (VGP) hydraulics
  • Environmentally friendly lubricants
  • Forestry equipment
  • Farm tractor/transmission/hydraulic fluids (UTHF)
  • Food processing
Compressor Oils

Diester, polyol ester and aromatic ester base stocks can withstand the extreme temperatures and pressures created by air or gas compression. The lubricant must prevent corrosion and wear while acting as a sealant. Synthetic esters are selected to be compatible with the gas being compressed, as well as the metals and elastomers used in the system.The optimum synthetic ester will have low vapor pressure and sufficient viscosity at peak operating temperatures.


  • Thermal/oxidative stability
  • Low volatility
  • High viscosity index
  • High flash point
  • Clean performance
  • Low temperature fluidity
  • Long service life

Compressor Types

  • Flooded rotary screw
  • Dry rotary screw
  • Rotary vane
  • Reciprocating
  • Centrifugal
Gear & Chain

Gear and chain applications demand lubricants that can withstand the stress of extreme loads and high temperatures. Synthetic esters with high oxidative and thermal stability protect surfaces and resist deposit formation. The broad range of gear applications and equipment designs are well served by synthetic esters that provide for long life and smooth operating performance.


  • Oxidation resistance
  • Thermal stability
  • Low volatility
  • Wear Protection
  • Low deposit formation
  • High viscosity
  • Low odor


  • Oven chain/conveyor drives
  • Spur gears
  • Helical gears
  • Bevel gears
  • Worm gears
  • Hypoid gears
  • Planetary gears

Synthetic esters are used as component base stocks with high performance hydrocarbons to provide excellent lubricity, viscosity grade compliance and deposit control.Optimum synthetic esters have low viscosity and low volatility to achieve low temperature fluidity requirements in two- and four-stroke engines, transmissions and gear sets.


  • Thermal/oxidative stability
  • Low NOACK volatility
  • Low-temperature fluidity
  • Seal conditioning
  • Long drain interval
  • Additive solubility
  • Lubricity and friction modification


  • Synthetic engine oils
  • Racing oils
  • Low viscosity, fuel economy engine oils
  • Two-stroke lubricant additives
  • Long life transmission fluids
  • Broad temperature range gear oils
  • Environmentally friendly oils
  • Dual purpose coolant/lubricants for electric vehicles

The polar ester group and long hydrocarbon chain give synthetic esters the ability to adsorb onto metal surfaces and deliver excellent boundary and mixed film lubrication.Metalworking fluids formulated with synthetic ester base oils or polymeric ester additives provide better cutting and forming efficiency, surface finish and tool life. Esters offer low VOC and friendly tox profiles making them safe for both workers and the environment.


  • Excellent lubricity
  • Long tool life
  • Easily emulsified
  • Worker friendly
  • Biodegradable
  • Hydrolytic stability


  • Ferrous and Non-ferrous metalworking applications
  • Straight oils
  • Soluble oils
  • Synthetic oils
  • Semi-synthetic oils

Low volatility, outstanding oxidative stability and low eco-toxicity make synthetic esters an excellent choice for greases that are used outdoors or in environmentally sensitive areas.Esters deliver an excellent combination of stability, low viscosity and lubricity in synthetic greases formulated with high performance thickeners.


  • Wide operating temperature range
  • High viscosity index
  • Excellent inherent lubricity
  • Low volatility
  • Oxidative and thermal stability
  • Worker friendly
  • Readily biodegradable
  • Environmentally friendly


  • Railroad grease
  • Farm tractor wheel bearing grease
  • Forestry equipment
  • Silica thickened grease
  • Polyurea thickened grease
  • Organoclay thickened grease
Dielectric Coolants

High viscosity index, excellent oxidative stability and low volatility make synthetic esters the preferred base fluids for jet-engine oils. Aviation turbine engine bearings demand fluidity at extreme low temperatures and lubrication film strength under high shear and high temperature conditions. Esters have been proven to deliver long life, low deposit formation and reliable lubrication under the most extreme operating conditions.


  • Thermal/oxidative stability
  • Low volatility
  • High viscosity index
  • High flash point
  • No deposit formation
  • Low temperature fluidity
  • Long service life


  • Type I diester lubricants for small private aircraft engines (3cSt)
  • Type II polyol ester lubricants for military and commercial jet engines (3 & 4 cSt)
  • Type III polyol ester lubricants for commercial jet engines (5 cSt)
  • MIL-PRF-7808L, MIL-PRF-23699G
  • SAE-AS5780 for commercial aviation engines
Textile & Fiber

Modern high-speed textile applications demand lubricants that improve process efficiency and are completely washable. Synthetic ester textile/fiber lubricants protect the weaving machinery as well as the integrity of the yarn by reducing friction and the buildup of static charges.


  • Excellent lubricity
  • Washes clean
  • Non-staining
  • Low smoke
  • Low absorption
  • Biodegradable
  • High temperature stability


  • Manufacturing fibers and yarns
  • Textile weaving and processing
  • Clothing manufacturing
  • Carpet strands and weaving

With excellent thermal conductivity, electrical properties and high flash/ fire points, synthetic esters provide long-lasting, high-performance cooling for modern transformers and increasingly sophisticated EV batteries. A combination of low viscosity and volatility, high thermal stability, and materials compatibility make synthetic esters a preferred base stock choice.


  • Excellent thermal conductivity
  • Fire resistance
  • Biodegradability
  • High dielectric strength
  • Low dielectric dissipation factor.
  • High electrical resistivity
  • High oxidative/thermal stability for long life


  • Fire resistant, biodegradable transformer oils
  • Electric vehicle battery coolants and lubricants
  • Immersion computing coolants
HX-1 Food Grade

Synthetic esters find use as lubricants in food processing applications where incidental food contact is possible. Oven chain lubricants, hydraulic fluids and gear oils are used in equipment for food cooking, processing and packaging. Multiple esters meeting the NSF HX-1 are available for formulators seeking to provide “H1” certified lubricants.


  • Thermal/oxidative stability
  • Low volatility
  • High flash point
  • Low deposit tendency
  • Biodegradable
  • Long service life
  • Kosher/Halal certified


  • H1 Oven chain lubricants
  • H1 Hydraulic fluids
  • H1 Gear oils
  • Meets requirements of FDA 21 CFR 178.3570

The use of Environmentally Acceptable Lubricants is growing, especially in applications where accidental release into environmentally sensitive areas is possible. Equipment used in marine operations, ports/harbors, farming, forestry, golf courses and electrical transformers utilize synthetic ester based lubricants to protect the environment, avoid costly clean-up charges/fines and achieve high equipment performance.


  • Biodegradable
  • Low aquatic toxicity
  • Excellent lubricity
  • Thermal/oxidative stability
  • Wide temperature operating range
  • High VI for excellent pump efficiency
  • High dielectric strength and resistivity


  • Products can meet EU EcoLabel performance (ISO 15380)
  • Esters are registered on the European LuSC list (Lubricant Substance Classification)
  • Esters are registered on the Global VGP list (Vessel General Permit) for marine applications

Operators seeking to lower their CO2 footprint can use lubricants containing synthetic or natural esters derived from renewable and sustainable natural oils and fats. The US government provides preferred purchasing status to lubricant products that are certified as USDA BioPreferred. BioPreferred esters can be formulated to combine exceptional performance and environmental friendliness.


  • High renewable carbon content
  • Derived from sustainable natural raw materials
  • Biodegradable
  • Low aquatic toxicity
  • Excellent lubricity
  • High viscosity index for energy efficient operation


  • BioHydraulic fluids
  • Transformer fluids
  • 2 and 4 cycle engine oils
  • Gear and Chain oils
  • Metalworking fluids
  • Industrial and Railroad grease
  • Concrete and asphalt release fluids
  • Complimentary with EU EcoLabel, EAL status


The metals manufacturing industry is constantly evolving, requiring lubricants that remove heat, reduce friction, extend tool life and improve surface finish. Metalworking additives are essential for emulsion stability, corrosion control, low friction and wear, and prolonged coolant life. Metalworking formulators must adapt to demands for improved operational efficiency, operator health and safety, and changing material metallurgy. Z&S offers a broad spectrum of halogen and sulfur free and metalworking additives to support your formulation requirements


Aqueous metalworking lubricants are formulated to provide cooling while protecting tools and delivering good surface finish.  This requires the stable emulsification of hydrophobic base stocks and additives that reduce friction, wear and corrosion.

MULSIFAN polyglycol products are available in a wide variety of HLB values to provide excellent nonionic emulsifying properties in hard and soft water with low foaming tendency.  PURTON amides are emulsifiers that also act as pH buffers and protect against corrosion.

PHOSPHETAL phosphate esters are multifunctional anionic emulsifiers and wetting agents that also provide excellent lubricity, wear protection and corrosion inhibition.

These products can be used alone or in combination to achieve the desired formulation properties.

Corrosion Inhibitors

Metal substrates are subject to rust or oxidative corrosion in the presence of water and aggressive chemicals, and therefore require protection during cutting and forming operations. We offer a variety of phosphorus or nitrogen based additives that bond or adsorb on metal surfaces to protect them against corrosive chemical attack which can cause staining or pitting. Take advantage of the multifunctional performance of Phosphetal phosphates, Cublen phosphonates and Purton amides.

Friction Modifiers

Phosphate esters are multifunctional additives used to formulate aqueous cutting and forming fluids due to their high polarity and affinity for metal surfaces. They act as anionic surfactants that provide wetting and corrosion inhibition. Phosphetalproducts reduce friction between metal-to-metal surfaces during machining, providing wear protection under extreme pressure conditions. Acid phosphate esters are also used in paints, coatings, inks and metal cleaning applications due to their detergent/dispersant functionality. Phosphetal phosphate esters are available in acid form or as neutralized salts.

EP/AW Additives

Aqueous metalworking fluids protect valuable tools from wear induced by high pressure and high temperature contact. Z&S Phosphetal and Cublen additives have high polarity and high phosphorus content which enable them to form protective tribo-films under boundary lubrication conditions. They also act as corrosion inhibitors to protect metal surfaces from oxidative attack.

Chelating Agents

Industrial water used to blend aqueous metalworking fluids contains a number of cations which grow in concentration as water evaporates. Cublen sequesters ions that would otherwise form soaps on equipment or work pieces and helps to maintain emulsion stability. The phosphorus content also provides multifuntional corrosion inhibition and antiwear protection.

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