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Standard material: sealing ring: polyurethane PU, retaining ring: nylon PA
Scope of application:
This product is used in combination with piston rod seals to absorb shock and fluctuating pressure under high load, isolate high-temperature fluid and improve the durability of seals. It can be used for power shovel, wheel loader, bulldozer, truck crane, wheel crane, dump truck, etc
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Features:
The special shaped slot on the sliding lip that can discharge back pressure can eliminate the pressure between the piston rod seal and the buffer ring.
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|
Speed |
Pressure range |
Temperature range |
Medium |
Diameter range available |
|
1m/s |
0~50mpa |
-45°c+110°c |
General petroleum based hydraulic oil |
40-400mm |
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Buffer ring must necessarily be equipped at the gap.
AsinFIG."A"and 'B' watch out for the orientation of back-up ring and PTFE ring.
|
Test |
Dimension |
BKS |
 |
||
|
Material code |
 |
GOLD |
BROWN |
BLUE |
 |
|
Hardness |
Shore A |
92 |
93 |
95 |
 |
|
Tensile Strength |
Kgf/cm |
415 |
400 |
580 |
 |
|
100%Modulud |
Kgf/cm |
105 |
100 |
128 |
Force when fulling at 100% |
|
Elongation |
% |
530 |
480 |
491 |
 |
|
Permanent Compression Set |
A;100° cx70H |
36(A) |
37(A) |
38(A) |
Strain rate with 70H at 100 degrees and 25%compression 70H |
|
B:70° cx70H |
20(B) |
23(B) |
23(B) |
||
|
Hardness Change By Air Oven |
100°cx70H |
0 |
0 |
0 |
 |
|
Low temperature Brittleness(TR10) |
°C |
-30 |
-27 |
-30 |
10%recovery temperature |
|
Temperature Pange |
°C |
+140/-40 |
+135/-40 |
+130/-35 |
 |
|
Temperature short term  |
°C |
 +150 |
 +140 |
 +135 |
 |
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HBY buffer ring does more then normal buffer ring does, not only just buffer the pressure spikes of hydraulic systems, but also acts as a primary seal and pressure spike suppressor. It is mainly used in construction machinery cylinder.
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http://www.parkerseal.net/