Rod Seals
GFS Rod Seals
Rod Seals are the most important seal within any hydraulic sealing system. Rod Seals prevent leakage of hydraulic fluid to the outside of the sealing system. Additionally, Rod Seals help contribute, in combination with a Wiper Seal, to preventing contamination of the environment. GFS Rod Seal profiles are available as single acting (pressure from one side) or double acting (pressure from both sides). High pressure Rod Seal applications often require an additional Buffer Seal, profile below, to assist with pressure spikes.
Prevent Leakage
Different Rod 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 Rod Seal materials are Polyurethane and PTFE blends. Specific GFS Rod Seal materials are outlined below.
Rod Seal applications can be very demanding on the seals. Rod Seals should be specified in conjunction with Rod Wipers; these two components can work together to optimize the performance of the system. 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.
Carbon Graphite PTFE
GFS Carbon Graphite Filled PTFE is a high performing material containing 23% carbon and 2% graphite. This material reduces creep, increases hardness and elevates thermal conductivity of PTFE. This material offers strong wear resistance and low friction properties. Material data sheet can be viewed here.
Bronze Filled PTFE
GFS Bronze Filled PTFE increases the strength and wear resistance of the seal. The Bronze filler increases dimensional stability and lowers cold flow and creep. Material data sheet can be viewed here.
