660 Specification Limits

TEST

Unit

DOT 3

DOT 4

DOT 5.1

RFB 660


Dry boiling point

°C

>205

>230

>260

312 (594°F)

Wet boiling point

°C

>140

>155

>180

205 (401°F)

Viscosity at -40°C (-40°F)

mm²/s

>1500

>1800

>900

1750

Viscosity at 100°C (212 °F)

mm²/s

 

>1.5

 

2.5

pH

 

7-11.5

7.4

 

 


Effect on rubber SBR (Styrene-butadiene)

Volume change at 70°C (70 hours)

mm

 

0.15-1.4

 

0.76

Softening (IRHD)

 

 

10 max

 

4.0

Disintegration

 

 

no

 

no

Volume change at 120°C (70 hours)

 mm

 

0.15-1.4

 

1.05

Softening (IRHD)

 

 

15 max

 

7

Disintegration

 

 

no

 

no


Evaporation

Loss at 100°C

weight % 

 

80% max

 

50


Fluidity and appearance at low temperature

Appearance at -40°C

 

 

clear

 

OK

Flow time

S

 

10 max

 

OK

Appearance at -50°C

 

 

clear

 

OK

Flow time

S

 

35 max

 

OK


Water tolerance

Appearance at -40°C

 

 

clear

 

OK

Flow time

S

 

10 max

 

OK

Appearance at 60°C

 

 

clear

 

OK

Sedimentation

%

 

0.15 max

 

OK


Anti-corrosion properties : Weight variation

Tinned iron

mg/cm2

 

0.2 max

 

0.03

Steel

mg/cm2

 

0.2 max

 

0.01

Aluminium

mg/cm2

 

0.1 max

 

0.02

Cast

mg/cm2

 

0.2 max

 

0.10

Tin

mg/cm2

 

0.4 max

 

-0.04

Copper

mg/cm2

 

0.4 max

 

-0.05