Wiper Seals
GFS Wiper Seals
GFS Wiper Seals (also known as Scrapers or Excluders) operate to exclude contaminants from entering the sealing system. These contaminants include dirt, mud, dust and moisture. The presence of these contaminants will have a negative impact on the performance of the equipment, and the life of the seals. Poor Wiper Seal performance is amongst the most common causes of premature sealing system failure. Wiper seals function in both a static environment when the equipment is stationary, and dynamically when the cylinder is extending and retracting.
Prevent Contamination
Wipers are designed to be installed in either a stepped or open hardware groove. Wipers installed in open grooves utilize a metal can on the outside of the wiper to ensure a press fit in the groove. Different Wiper Seal profiles offer distinct advantages depending on the sealing application. Temperature, Pressure, Stroke Speed and other environmental considerations would lead users to different profiles and materials. Primary Wiper Seal materials are Polyurethane and PTFE blends. Specific GFS Wiper Seal materials are outlined below.
Wiper Seal applications can be very demanding on the seals. GFS Engineers are available to consult on any Piston Seal application. Click here to contact a GFS Engineer.
Materials
Polyurethane
GFS Polyurethane 95A is a 95 durometer thermoplastic polyurethane material appropriate for the vast majority of hydarulic piston seal applications. It offers some hydrolysis resistance. Material data sheet can be viewed here.
