Mobil Zerice S 68

Specifications

Brand

Mobil (ExxonMobil)

Range

Mobil Zerice

Category

Compressor oils

Viscosity

ISO VG 68

Manufacturer code

201560254050

Availability

On request

Typical characteristics

Manufacturer's description

Mobil Zerice S 68 is a premium quality synthetic refrigeration compressor lubricant based on alkyl benzenes, in ISO VG 68, from the Mobil Zerice S series. Its chemical nature gives it superior miscibility with hydrochlorofluorocarbon refrigerant (R22), enabling use in very low temperature applications down to -60°C; in certain circumstances it can also be used in compressors where ammonia is the refrigerant. Compared with mineral and other synthetic lubricants, it offers superior solubility with halocarbon refrigerants, helping to avoid oil separation and congealing on valves and heat transfer surfaces. It has very low pour and floc points, helping prevent harmful wax precipitation that could block expansion valves and heat transfer surfaces, while its synthetic base provides excellent chemical stability against reaction with refrigerants and high thermal stability that resists oil breakdown, supporting long oil service life. It is recommended for all types of refrigeration compressors — reciprocating or rotary screw — and is well suited to hydrochlorofluorocarbon refrigerants and, in certain equipment builders' compressors, ammonia. It should not be used with sulfur dioxide or R134A refrigerants; the viscosity grade should be selected per the compressor manufacturer's recommendation. Mobil Zerice S 68 has a kinematic viscosity of 68 mm²/s at 40°C, an R12 flocculation point of -60°C (AMS 100.42), a pour point of -27°C and a flash point of 174°C.

Applications

• Mobil Zerice S lubricants are recommended for all refrigeration compressor types: reciprocating or rotary screw.
• They are well suited for use with hydrochlorofluorocarbon refrigerants, and may also be suited for use with ammonia in certain equipment builders' compressors.
• They should not be used with sulfur dioxide or R134A refrigerants.
• The specific viscosity grade should be selected in accordance with the compressor manufacturer's recommendations.

Performance & benefits

• Relative to mineral and other synthetic lubricants, Mobil Zerice S has superior solubility with halocarbon refrigerants.
• This helps avoid the common problem of oil separation and congealing on the valve and heat transfer surfaces of the refrigeration system.
• Additionally, Mobil Zerice S lubricants have very low pour and floc points which helps prevent harmful wax precipitation that can block expansion valves and heat transfer surfaces.
• The synthetic nature of Mobil Zerice S lubricants provides excellent chemical stability which resists reaction with refrigerants, as well as high thermal stability which helps prevent oil breakdown.
• Miscibility with halocarbon refrigerants: increased system efficiency.
• Low pour and floc points: avoids wax precipitation and increased system efficiency.
• Chemical stability: long oil service life.

Fits

• Compressors & pumps