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Mobil Rarus PE R-B 220

Ethylene compressor oil

Basic Identifiers

ID Type BO VG NSF
5423 Compressor oil mineral 220 h1

Description

Mobil Rarus PE R-A, R-B, R-C and R-D 220 are viscous, colourless oils of ISO viscosity grade 220, specifically designed for the lubrication of very high pressure ethylene compressors. They are based on high purity, saturated hydrocarbon oils (white oils), supplemented with friction reducing and free-radical trap additives at adapted treat levels. In the production of polyethylene, high-speed reciprocating compressors are used to compress ethylene gas to high pressures up to 3000bar. In these applications, the compressor lubricant can come in contact with the polyethylene in the polymerization process. Under these circumstances, the lubricating oil required must be of acceptable purity and be known not to modify the properties of the polyethylene. Mobil Rarus PE R-A, R-B, R-C and R-D 220 provides good lubrication of the compressor cylinders and are compatible with the polyethylene process. They can be used to produce polyethylene where food contact can occur such as in food packaging. Mobil Rarus PE R-A, R-B, R-C and R-D 220 have good thermal and chemical stability. They can be used up to 3000 bars, according to injection system and temperature. Reactive gas components and impurities may react into the compressor itself, with formation of sludge, which may lead to lubrication failure. This is prevented by the additives, which also reduce bushing wear. Mobil Rarus PE R-A 220 is recommended with highly reactive gas components. Mobil Rarus PE R-B 220 is recommended for low reactivity impurities. Its additives display low volatility and migration. It is well suited for applications where there is fatty food contact Mobil Rarus PE R-C 220 is recommended for intermediate reactivity gases. Mobil Rarus PE R-D 220 is recommended for specific highly severe, high pressure applications.

Technical specifications

Specs Typical Values
Density 874
Flash Point (in C) 210
Pour Point (in C) -12
Viscosity at 40C 226

Attachments

Format Type File name Language File size
PDS Mobil-Rarus-PE-Series.pdf English 43 KB
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