The EM‑type wiper seal is a critical external dust‑proof component designed for hydraulic and pneumatic piston rods, protecting internal sealing systems from external contaminants such as dust, sand, mud and moisture. Manufactured from high‑grade polyurethane and elastomer materials, this wiper seal exhibits excellent wear resistance, low‑temperature flexibility and anti‑aging performance for long‑term reciprocating operations.
Its specially optimized scraping lip delivers firm contact against the rod surface. It efficiently strips off foreign particles when the piston rod retracts, preventing dirt from entering the cylinder interior and avoiding abrasive damage to primary seals and rod surfaces. The compact profile fits standard installation grooves conveniently, requiring no complex tools during assembly. It tolerates minor rod misalignment and maintains stable wiping performance under frequent cyclic movements.
Suitable for diverse working conditions, EM‑type wiper seals are widely used in construction machinery, material‑handling equipment, agricultural hydraulics and general‑purpose industrial cylinders. Choosing the correct size and surface finish will greatly reduce premature component wear and extend the overall service life of hydraulic cylinders. As a reliable dust exclusion solution, the EM‑type wiper seal helps cut equipment maintenance costs and improves the reliability of the whole hydraulic system.
Original text from: Hydraulic and Pneumatic Seals https://www.bszzseal.com/
