HPU is Hydrolysis Resistant Polyurethane. It has excellent resilience property which is perfectly suitable for hydraulic applications.
Piston Seals are used in Hydraulic Cylinders for Fluid Sealing. They allow in pressure building on one side of the piston for extension / retraction. They are placed between the piston and the bore. Seals from Bore dia 5 mm to 850 mm are manufactured as per customer specific pressure/ temperature / surface speed / fluid requirements.