Products

Duratherm S

A silicone based heat transfer fluid that is ideally suited for high oxidation applications or completely exposed systems. Duratherm S is virtually impervious to oxidation at temperatures under 204°C (400°F) and offers superior protection from fluid degradation. Duratherm S is best suited for applications not prone to contamination or leaking.

316°C (600°F) maximum operating temperature
Pumpable down to -50°C (-46°F)
Very strong resistance to oxidation up to 204°C (400°F)
Recommended for use in fully exposed systems like open baths
Highly resistant to fouling for an extremely long service life
Non-corrosive and non-toxic thermal fluid for added workplace safety

TDS
(Technical Data Sheet)

SDS.
(Safety Data Sheet)

Temerature Ratings
Maximum Bulk/Use Temp	316°C
Maximum Film Temp	366°C
Pour Point ASTM D445	-66°C

Safety Data
Flash Point ASTM D92	324°C
Fire Point ASTM D92	336°C
Auto Ignition ASTM E-659-78	437°C

Thermal Properties
Thermal Expansion Coefficient	0.1782 %/°C
Thermal Conductivity	W/m·K
38°C	0.133
204°C	0.109
260°C	0.1
288°C	0.097
316°C	0.093
Heat Capacity	kJ/kg·K
38°C	1.717
204°C	2.034
260°C	2.144
288°C	2.194
316°C	2.248

Physical Properties
Viscosity ASTM D445	cSt
40°C	36.14
100°C	16.57
260°C	5.19
288°C	4.54
316°C	4.03
Density ASTM D1298	d/ml
38°C	0.949
204°C	0.811
260°C	0.767
288°C	0.744
316°C	0.721
Vapour Pressure ASTM D2879	kPa
38°C	0
204°C	0.138
260°C	1.793
288°C	3.516
316°C	6.826
Distillation Range ASTM D2887
10%	495°C
90%	680°C

Note: The values quoted in the table above are typical of normal production.
They do not constitute a specification.