Advantages
♦ Boric acid ester brake fluid with high boiling point of dry/wet equilibrium reflux,
outstanding high/low temperature property
♦ Excellent anti-rust, anti-corrosion, anti-oxidation and compatibility with rubber, ensuring safe and stable braking actions
Performance specification
The product meets the following specifications:
♦ FMVSS NO.116 DOT4
♦ GB 12981-2003 HZY4
Applications
♦ Suitable for brake system of various passenger cars and heavy duty trucks with hydraulic brake, and clutch system of engineering machinery, meeting application requirements of vehicles under conditions of torrid, cold or freezing weathers, or in mountain areas
Typical properties
|
Items
|
Specifications
|
Typical properties
|
|
Equilibrium reflux boiling point (ERBP), ºC
|
≥230
|
260
|
|
Wet equilibrium reflux boiling point (WERBP), ºC
|
≥155
|
163
|
|
Kinematic viscosity (-40ºC), mm2/s
|
≤1800
|
1175
|
|
Kinematic viscosity (100ºC), mm2/s
|
≥1.5
|
2.127
|
|
pH
|
7.0~11.5
|
8.9
|
|
Metal corrosivity (100ºC,120h)
Mass variation, mg/cm2
|
Tin
|
±0.2
|
0.00
|
|
Steel
|
±0.2
|
0.00
|
|
Aluminium
|
±0.1
|
0.00
|
|
Cast iro
|
±0.2
|
0.00
|
|
Red copper
|
±0.4
|
0.09
|
|
Brass
|
±0.4
|
0.10
|
|
Zinc
|
±0.4
|
0.07
|
|
Evaporation property
(100ºC, 168h)
|
Evaporation loss, %
|
≤80
|
72
|
|
Residuum pour point, ºC
|
≤-5
|
<-5
|
|
Rubber
compatibility
(70h)
|
SBR cup
|
70ºC
|
Root cylinderincrement,mm
|
0.15~1.4
|
0.52
|
|
Hardness variation, IRHD
|
0~10
|
4
|
|
120ºC
|
Root cylinder increment, mm
|
0.15~1.4
|
0.67
|
|
Hardness variation, IRHD
|
0~15
|
6
|
|
EPDM cup or test piece
|
70ºC
|
Volume change, %
|
1~10
|
1.44
|
|
Hardness variation, IRHD
|
0~10
|
1
|
|
120ºC
|
Volume change, %
|
1~10
|
2.35
|
|
Hardness variation, IRHD
|
0~15
|
3
|
Precautions in application
♦ Avoiding splash on surface of painted part
♦ With hygroscopicity, requiring airproof storage after unsealing
♦ Avoiding pollution from dirt, mineral oil, fuel and water, otherwise causing malfunction
brake
♦ With toxic materials such as polyglycol ether, avoiding eating by accident, keeping out of reach of children
