Wiper Seals - Rubber Material, Max Speed 4m/s, Temperature Range -40 To +120 C | Axial Seal, Dynamic & Static Use, Prevents Contaminant Ingress

Hydraulic cylinders operate in a variety of applications and environmental conditions, including exposure to dust, debris or outside weather conditions. To prevent these contaminants from entering the cylinder assembly and hydraulic system, wiper seals (also known as scrapers, excluders or dust seals) are fitted on the external side of the cylinder head

Wiper seals maintain sealing contact to the piston rod when the equipment is stationary (static, no reciprocating motion of rod) and in use (dynamic, reciprocating rod), whereas the tolerance for the rod diameter d is determined by the rod seal. Without a wiper seal, the retracting piston rod could transport contaminants into the cylinder.

A wiper seal is an axial seal that creates a seal while allowing a reciprocating shaft to pass through the seals inner bore. The role of the wiper seal is to prevent the ingress of dust and dirt or other foreign bodies, therefore extending the working life of the seal it is protecting.All other functions, such as providing a secondary seal for the rod, are subordinate to this prime.Wiper seals are typically used on hydraulic and pneumatic cylinders, as well as telescopic suspension forks for motorcycles and bicycles.Temperature range of wiper seals is usually between -40A C and +120A C and max speed is at 4m/s.