SUNISO Refrigeration Oil--GS Series

By Qishanr Lubricants December 2nd, 2025 322 views

Application Scope​

  • Applicable Equipment: Special refrigeration oil for refrigerators and air conditioners.

    ​
  • Compatible Compressor Types:

    ​
  • Reciprocating compressors​

  • Rotary compressors​
  • Scroll compressors​
  • Screw compressors​
  • Turbo compressors

    ​
  • Compatible Refrigerants:

    ​
  • HCFC refrigerants: R-22, R-502​

  • Natural refrigerants: R-600a, R-717, R-290​
  • CFC refrigerants: R-12

    ​
  • Application Scenarios:

    ​
  • Oil filling for new units during factory delivery​

  • Oil replacement for units after maintenance​
  • Selection Principle: Choose the corresponding viscosity grade of SUNISO GS lubricating oil in line with the technical specifications of the compressor manufacturer.

    ​

Core Technical Characteristics​

  1. Chemical Stability

    ​
  • No chemical reactions with refrigerants and various materials in the system​

  • Ensures material compatibility of the entire refrigeration system

    ​
  1. Thermal Stability

    ​
  • Effectively reduces deposit formation during compressor operation​

  • Maintains long-term cleanliness of the system

    ​
  1. Low-Temperature Adaptability

    ​
  • Adopts low-wax component design​

  • Maintains good fluidity under extremely low-temperature working conditions​
  • Prevents system blockage caused by wax precipitation

    ​
  1. Electrical Insulation

    ​
  • Possesses high dielectric strength​

  • Meets the electrical safety requirements of refrigeration equipment

    ​

Typical Performance Parameters (by Model)​

​
Performance Item​
Test Method​
3GS​
4GS​
5GS​
6GS​
Kinematic Viscosity (40℃), cst​
ASTM D445​
29.6​
54.83​
98.47​
145.5​
Kinematic Viscosity (100℃), cst​
ASTM D445​
4.36​
5.8​
8.72​
9.766​
Density (15℃), g/cm³​
ASTM D1298​
0.9115​
0.915​
0.92​
0.9265​
Flash Point, ℃​
ASTM D93​
176​
188​
216​
226​
Pour Point, ℃​
ASTM D97​
-40​
-35​
-30​
-23​
Floc Point, ℃​
SUN 1.58​
-54​
-48​
-37​
-35​
Dielectric Strength, KV​
JIS C2101​
55​
50​
45​
40​
ASTM Color​
D1500​
L0.5​
L1.0​
L1.5​
1.5​
Total Acid Number, mgKOH/g​
D974​
0​
0​
0​
0​
Moisture, PPM​
D1533​
25​
20​
25​
20​
Copper Strip Corrosion (100℃), Grade​
D130​
1a​
1a​
1a​
1a​
​

Copyright & Citation Notice

Original publication. This article, “SUNISO Refrigeration Oil--GS Series”, was originally published by QishanrLubricants on 2025-12-02 at qishanrlubricants.com. © 2026 QishanrLubricants. All rights reserved.

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