The document provides information on CEPSA DIATERMO 32, an oil formulated for heat transfer applications up to 315oC. It lists the product's key characteristics, specifications, and performance benefits. CEPSA DIATERMO 32 offers high thermal conductivity and heat capacity, along with excellent oxidation stability and strength at high temperatures. It also has low viscosity variations and cold flow properties for reduced pumping wear.

1. The typical values of the characteristics appearing in the table are average values given for guidance purposes.
These values may be modified without any prior warning.
CEPSA Lubricantes, S.A. · C/ Ribera del Loira, 50 · 28042 Madrid · www.cepsa.com/lubricantes-eng Rev. 1, month: November, year:2010
CEPSA DIATERMO 32
An oil formulated with highly-refined paraffinic base oils and a special additive that produces a very stable product
with a high viscosity index. Due to this, the viscosity is maintained without suffering any variations during the heat
transfer process.
Applications
o Specially indicated for heat transfer in closed circulation systems that are at limit layer temperatures of up
to 315ºC.
Performance
o High thermal conductivity, low vapour pressure and high specific heat, together with high oxidation stability.
A technically ideal, high performance fluid for heat transfer systems.
o High chemical stability and strength at high temperatures. Maintains transfer systems free of deposits and
lengthens oil change periods.
o Low cold viscosity. Reduces pumping wear, since friction losses are diminished.
CHARACTERISTICS ASTM STANDARD CEPSA DIATERMO
ISO Grade (ISO-3448) 32
Density 15 ºC, kg/l D-4052 0,8741
Flash Point, COC, ºC, min D-92 228
Pour Point, ºC, max. D-97 -12
Viscosity at 100 ºC, cSt D-445 5,345
Viscosity at 40 ºC, cSt D-445 32,48
Viscosity Index D-2270 102
Distillation (5%), ºC D-1160 370
Health, safety and environmental information is provided for this product in the Materials Safety Data Sheet. This
gives details of potential hazards, precautions and First Aid measures together with environmental effects and
disposal of used products.
Lubricants for Industrial Use