Â
Products Description
Â
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
Â
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.
Â
Technical parameter:
Â
Speed | Pressure range | Temperature range | Medium | Diameter range available |
1m/s | 0~50mpa | -45°c+110°c | General petroleum based hydraulic oil | 40-400mm |
Â
Buffer ring equipment
Â
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 | Â | ||
Material code | Â | GOLD | BROWN | BLUE | Â |
Hardness | Shore A | 92 | 93 | 95 | Â |
Tensile Strength | Kgf/cm | 415 | 400 | 580 | Â |
100%Modulud | Kgf/cm | 105 | 100 | 128 | Force when fulling at 100% |
Elongation | % | 530 | 480 | 491 | Â |
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 |  |
Â
Hydraulic seal kit- Buffer seals/buffer rings
Â
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.
Â
http://www.parkerseal.net/