Manufacturer: Nok.

Features

• Improves sealing performance at both high-speed rotations of the shaft.
• The new shape (VF screw) supports high peripheral speeds of 50 m/s in both forward and reverse directions.
• It has a high pumping capacity even during wear progression and exhibits excellent sealing properties.

                    The corresponding peripheral speed is about 2.5 times in both the forward and reverse directions

                                                      Comparison of pump volumes

                                              New Shape Pump Mechanism of Action