Products / Parker / Seal and O-Rings / Rod Seal Praedifa Series BU, Ultrathan®
Rod and buffer seal for hydraulic cylinders, single-acting. Compact seal design with anti-extrusion ring. Primary seal in tandem systems. For high pressures and extreme pressure peaks. Robust design with extreme wear resistance. ISO 5597 and ISO 7425.
The BU Ultrathan® rod seal is a compact seal
with an integrated anti-extrusion ring. It is frequently used as a
buffer seal within sealing systems such as those utilized in
construction machine cylinders. Construction machine cylinders
operate in harsh conditions in which pressure peaks of up to 1000
bar frequently occur. The BU rod seal is installed upstream to
isolate such loads from the secondary seal. Due to its special
shape, the seal (like a return valve) is able to return pressure
that may build up between the primary and the secondary seal into
the system. A single or tandem arrangement of this product series is
possible as well.
• Enhanced sealing performance in non-pressurized conditions.
• Robust seal profile for harshest operating conditions.
• Extreme wear resistance.
• Insensitive to extreme pressure peaks.
• Extremely high extrusion resistance.
• Excellent media resistance in case of suitable compound selection.
• Suitable compounds available for special requirements of the
chemical process industry.
• Suitable compounds available for special requirements of the food
processing industry.
• Dimensions according to ISO 5597.
• Dimensions according to ISO ¬7425-2.
• Short axial assembly length.
• Installation in closed and undercut housings.
• Further dimensions of machined series with short lead times
available.
Range of application:
Mainly used for sealing cylinders in mobile hydraulics.
The BU rod seal is available in the following compounds:
00575 - Bio-degradable fluids
00655 - Low temperatures
00656 - Industrial applications
00664 - Heavy-duty