A special application for ethylene gas compressors. Shell Gas Compressor S3 PY lubricants are synthetic blends designed for total-loss cylinder lubrication in hypercompressors, in the manufacture of low-density polyethylene (LDPE), including LDPE used in special applications such as food, pharmaceutical and cable insulation products, and of ethylene vinyl acetate (EVA). The low rate in the case of food contact and the high-quality components help ensure minimal impact on polymer production quality.
Applications
High-pressure hypercompressorsShell Gas Compressor S3 PY oils have been used extensively in hypercompressor applications for over 10 years. The ISO 220 viscosity grade offers the lowest rate for low oil content in the final polymer, but requires the use of high temperatures for the heating line.
Food industry applicationsShell Gas Compressor S3 PY lubricants meet the US FDA requirements for incidental food contact.
Pharmaceutical applicationsThe oils are suitable for use in polymer manufacture, in applications where they will come into contact with pharmaceutical products.
LDPE insulationThe use of Shell Gas Compressor S3 PY lubricants allows the production of LDPE with good dielectric properties, suitable for cable insulation.
Performance & benefits
Outstanding wear protectionShell Gas Compressor S3 PY lubricants are formulated with an effective load carrying additive system to ensure protection of sliding components, even at low feed rates.
Maintaining production efficiencyBecause hypercompressor cylinder lubricants are total-loss systems, traces of lubricant may appear in the finished LDPE and affect the polymer's suitability for certain applications. Shell Gas Compressor S3 PY lubricants are formulated on medicinal white oils, which guarantee the polymer's eligibility for a wide range of uses, including pharmaceutical and food applications, thereby giving operators production flexibility.
Shell Gas Compressor S3 PY lubricants have been tested by the most important hypercompressor OEMs, such as Burckhardt Compression AG, Dresser-Rand and Nuovo Pignone, and approved for certain applications
FDA/USA 21 CFR 178.3570 for incidental food contact
European Directive 2002/72/EC, Annex V, for plastics used in contact with foodstuffs
The base fluids meet the FDA/USA 21 CFR 178.3620 requirements for medicinal white oils
Standards & approvals
Compatibil cu materialele de etansare
Typical characteristics
Property
Typical value
Method
Kinematic viscosity @40°Cmm2/s
225
Astm D445
Kinematic viscosity @100°Cmm2/s
20.5
Astm D445
Density @15°Ckg/m3
874
Astm D 1298
Flash point (COC)°C
>240
Astm D 92
Pour point°C
-6
Astm D 97
Sulphated ash% m
<0.01
DIN 51575
Neutralisation valuemg KOH/g
0.6
Astm D 974
Complete documentation
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