Wiper NBDA AF 12 x 20 x 6/8 NBR

NBDA wiper is a single-acting double wiper and ensures that foreign particles are not introduced into the hydraulic cylinders. The specially designed lip wipes off the dirt reliably, but leaves a residual oil film on the rod. APPLICATION: Construction machinery, forklift-trucks, injection moulding machines, agricultural machinery and standard cylinders. INSTALLATION: Generally, the wiper can easily be fitted into the closed housing by deforming it into a kidney shape. It is very important that the assembly tools must be of soft material and have no sharp edges. Before installation the wiper must be oiled with system oil. NOTES: NBDA double wiper should be used in combination with suitable rod seals to avoid hydrodynamic pressure, or a pressure relieving bore between seal and wiper should be constructed to prevent pressure-build up. NBDA wipers can be produced on request in FKM material for special applications that require high temperatures.