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Protecting Hydraulic and Pneumatic Cylinders Against the Entry of Dirt

Wipers prevent the entry of dust and dirt particles when the piston rod is retracted. They protect not only the sealing system from damage but also the hydraulic fluid from contamination. In addition, double-acting wipers also retain an excess residual oil film. Thanks to their press fit, wipers with metal housings are particularly suitable for heavy external contamination. The Dichtomatik product brand portfolio offers a wide variety of wipers, which can be used in many hydraulic cylinders.

Benefits at a Glance

  • Single- and double-acting variants for open and closed installation spaces
  • Different profiles for standardized installation spaces
  • Wear resistant and therefore good lifetime
  • Good resistance against oils, lubricants, greases and hydraulic fluids
  • Very good price-performance ratio
  • Suitable for many industrial applications

Important note: Dichtomatik products comply with common industrial standards and therefore are suitable for many applications excluding safety-critical ones like Automotive. Premium Freudenberg products are the right choice for all applications ensuring highest quality and safety standards and therefore optimal total cost of ownership.


Choose the Right Product

Out of Four Types

  • AE series: single-acting; for mounting in closed installation spaces (AE40, AE42, AE41, AE47)
  • AM series: single-acting wiper with circumferential metal reinforcement for press-fit mounting in axially open installation spaces (AM43, AM44, AM45, AM54)
  • AD series: double-acting; for mounting in axially closed installation spaces. Made of NBR, TPU (AD48, AD51) or PTFE bronze material with an O-ring made of NBR as pre-tensioning element (AD60, AD61)
  • ADM55: double-acting wiper including a metal caged ring being vulcanized to the TPU body; for press-fit installation in axially accessible installation spaces

Please note that resistances, pressures and temperatures are mutually influenced by various parameters.

Related Documents

Product Portfolio

Sealing products setting benchmarks

Premium products and individual sealing solutions of the Freudenberg brand are the perfect choice for any application. Uncompromising quality (0-defect strategy) and excellent performance ensure full safety and optimized total cost of ownership (TCO).

Freudenberg Wipers