Engineered Polymer Systems Division

Parker raises the bar in high performance sealing technology with Resilon® 4350 Polyurethane with High Temperature Nanotechnology

Confidently seal in hotter environments and reduce downtime caused by seal failure due to heat.


SALT LAKE CITY, Utah, March 1, 2017 – The Engineered Polymer Systems Division of Parker Hannifin Corporation, the global leader in motion and control technologies, today announced the launch of Resilon® 4350 Polyurethane delivering unmatched high temperature seal performance and reliability for a wide range of applications. This new material extends the high temperature sealing range of polyurethanes by over 20°F.  


Parker’s Resilon Polyurethane is the established industry leader in high performance hydraulic sealing systems.  This newest addition, Resilon 4350, increases the high temperature operating window from 230°F to 250°F for continuous use in many applications while other critical performance attributes such as wear resistance, extrusion resistance, glass transition temperature, and rebound remain best in class.   All of this adds up to a new solution for seal designers as they push the envelope in temperature extremes. 


Resilon 4350 is a great choice for applications where there is concern about short term high temperature exposure or where the continuous operating temperatures are elevated.  Extended seal life in these conditions reduces downtime and increases the maintenance interval of the equipment.


“Parker has been a leader in material science technology for decades with a strong history of serving the Fluid Power industry in applications where performance and reliability are essential.  Resilon 4350 Polyurethane is our newest example of the innovative minds of our material scientists and design engineers.” said Dale Ashby, Vice President of Technology at Parker Hannifin.



About Engineered Polymer Systems Division

Parker Engineered Polymer Systems Division designs, manufactures and supports engineered elastomeric and engineered plastic seals and energy management products utilizing leading edge technologies. Learn more at



About Parker Hannifin

Parker Hannifin is a Fortune 250 global leader in motion and control technologies.  For 100 years the company has engineered the success of its customers in a wide range of diversified industrial and aerospace markets.  Learn more at or @parkerhannifin


Media Contacts

Jerry Peak, Market Manager

                        Parker Engineered Polymer Systems Division

                        Phone 847 783 4303