Zurcon® Wynseal® M is a double-acting, O‑Ring energized piston/rod seal crafted from tear- and abrasion-resistant Zurcon® polyurethane. Designed for dynamic applications in ISO‑7425 grooves, it supports diameters up to ~2,700 mm (105″). It delivers high sealing efficiency, long wear life, and reliability in heavy-duty hydraulics with pressures up to ~25 MPa and speeds up to 0.5 m/s.