N 80 X 95 X 8.5 AU

BU U-Cup

BU (Rod Seals)

The rod seal profile BU is a compact seal with an integrated anti-extrusion ring. A typical application of this seal profile is to use as a buffer seal in sealing systems often found on construction machinery cylinders. These cylinders operate under extreme conditions where pressures up to 1000 bar are not unusual. The rod seal profile BU is used to isolate the main seal from this load. Due to its special for, the seal is in a position to transfer pressure which develops between the main and buffer seals, back into the system. Single as well as tandem configurations of this seal profile are possible.

The BU offers:

• Unusually high wear resistance

• Insensibility against shock loads and pressure peaks

• High extrusion resistance

• Low compression set

• Suited for the toughest operating conditions

• Easy assembly

Hydraulic Application:

• Working Pressure: = 500 bar ( Pressure peaks to 1000 bar)

• Working Temperature: -35°C to 110°C (-31°F to 230°F)

• Surface Speed: =0.5 m/s