RQB-GY25 Polymeric Ester for Semi-synthetic Cutting Fluid

Introduction:  RQB-GY25 is a polymeric ester designed for semi-synthetic cutting fluids and neat cutting oils. It provides excellent lubricity and extreme pressure performance, and when blended with phosphorus- or sulfur-based EP additives, it can effectively replace chlorinated paraffins, offering an eco-friendly solution compliant with future regulatory trends.

RQB-GY25 Replaces Lubrizol®  SYN-ESTER GY-25

  1. Cutting Oils: Recommended dosage: 1–10%
  2. Stamping Oils: Recommended dosage: 1–10%
  3. Drawing Oils: Recommended dosage: 2–10%
  4. Water-based Cutting Fluids: Recommended dosage: 3–5%

Inquire to obtain the latest TDS file.

 

RQB-GY25 is suitable for semi-synthetic cutting fluids and neat cutting oils. It provides excellent extreme pressure lubrication, especially for high-load machining applications.
When blended with phosphorus-sulfur extreme pressure additives, it can effectively replace chlorinated paraffins, offering a more environmentally friendly solution in line with future regulatory trends.

Features

✔ Excellent solubility in naphthenic and paraffinic oils
✔ Outstanding lubricity & EP performance under high loads
Biodegradable, eco-friendly alternative to chlorinated paraffins
✔ Especially suitable for neat oil machining applications
✔ Stable performance across multiple metalworking fluid systems

Physical and Chemical Properties of the Product

 

​Item Value Unit
Appearance White to light yellow paste-like liquid
Acid  Value 20~28 mg.KOH/g
Viscosity 3200~3800 mm2/s
Saponification value 205 mg/g
Iodine  value <5 g/100g

 

One Comment

  1. Ruqinba October 9, 2025 at 1:31 am - Reply

    We welcome your feedback and suggestions. Whether positive or critical, we’ll take them seriously and continue to improve. Thank you for your support!

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