A wiper ring, in the context of hydraulic and pneumatic machinery, is a component designed to protect seals and internal parts from dirt, dust, moisture, and other contaminants that could compromise the system’s operation. Its main function is to clean the rod or piston shaft as it moves, preventing the ingress of harmful external agents.

Here is a more detailed definition:

• Function: Removes debris and contaminants from the rod surface, preventing damage to seals and other internal components.
• Materials: Commonly made of rubber (such as NBR or FKM) or synthetic materials (such as PTFE), often combined with an O-ring for improved sealing.
• Applications: Used in hydraulic and pneumatic systems with reciprocating movements, such as those found in earth-moving machinery, forklifts, and presses.
• Benefits: Ensure greater seal durability, improve system efficiency, and reduce maintenance costs.
• Types: There are various types of wipers, including single-lip, double-lip, and metal-cased designs, each suited to different applications and operating conditions.

Technical features