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Shell Clavus R

Synthetic Refrigerator Compressor Lubricant

Shell Clavus Oils R are synthetic refrigerator lubricants with a polyolester base fluid. These
lubricants have been developed for use with R134a and other environmentally acceptable HFC
refrigerants.

Main Applications                                                  Good compatibility
                                                                   Shell Clavus R is compatible with elastomers
Refrigerator compressors                                           commonly used in refrigeration systems.

Shell Clavus R is recommended for use in open, semi-
open and hermetic compressors operating with                       Performance Specifications

refrigerants such as R 134a, R 23, R 404A, R407C,
R 507 and other blends of HFC-refrigerants.                        Shell Clavus Oil R meets the requirements of DIN
                                                                   51503 KD.

Refrigerator plant design
For all applications of refrigeration and air-                     Performance Benefits

conditioning such as: industrial refrigeration,
refrigeration systems for food storage, mobile and                 Improved Compressor Efficiency & Lower
stationary air-conditioning.                                       Maintenance Costs
When switching to new refrigerants and refrigerator                *    Excellent Thermal Stability with refrigerants
oils the requirements of the refrigeration system                      R134a, R23, R404a, R407, R507 and other
manufacturer have to be followed.                                      blends of HFC refrigerants
                                                                   *    Excellent Chemical Stability which minimises the
Performance Features                                                   formation of the products of corrosion and
                                                                       sludges, and avoids decomposition of the
                                                                       refrigerant.
Fully synthetic formulation
                                                                   *

    Complete Solubility in Refrigerant R134a
Shell Clavus R is a high-tech synthetic refrigerator oil
                                                                   *    Excellent flow properties at low operating
based on polyol ester fluids.
                                                                       temperatures
                                                                   *    Good Anti Wear Properties which maximise the
Excellent stability
Shell Clavus R has excellent thermal and oxidation                     life of compressor components
stability. This results in a high performance level of             *    Excellent lubrication properties which help
the oil over a long period of time.                                    reduce wear and prevent leakage’s
                                                                   *    Compatibility with all seal materials normally
                                                                       specified for use in refrigeration systems
Very good solubility
Very good solubility, particularly with R134a, R23                 *   Meets the requirements of major refrigeration
and comparable refrigerants, as well as with blends                    compressor manufacturers including Sabroe

of those refrigerants.

Advice                                                                                   Typical Physical Characteristics

Product handling                                                                        Shell                         32         46        68       100
                                                                                      Clavus R
The hygroscopic nature of the base fluid has to be
taken into consideration and it is recommended that,
                                                                                        ISO                           32         46        68       100
when filling the system, air contact should be avoided                                 Grade
as much as possible. once an oil pack has been                                          Kin.     40 C       IP 71      32        42        64        93      mm2/s
opened it must be sealed carefully after use and the                                  Viscosity
remaining contents should be used within a few days.                                             100 C       IP 71      6        6.2       8.6      10.9     mm2/s

Advice on applications not covered in this leaflet may
                                                                                      Density     15 C      IP 365    1.018     0.975     0.99      0.99       kg/l
be obtained from your Shell representative
                                                                                        Flash    Open      IP 36       255       245       250       280        C
                                                                                        Point     Cup
Health & Safety                                                                         Pour                 IP15      -54       -48       -42       -42        C
                                                                                        Point
                                                                                     Floc Point   with      DIN      <-50       <-30      <-30      <-15        C
Guidance on Health and Safety are available on the                                              R134a *   51351

appropriate Material Safety Data Sheet which can be                                            with R12 (ASHRAE      <-50       <-50      <-50      <-50        C
obtained from your Shell representative.                                                                      )

Good anti-wear properties