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Pressure: ≤0.3 MPa Rotational Speed: ≤5000 r/min (up to 5000 rpm) Temperature Range: -30°C to +150°C Media: Fresh water, seawater, internal combustion engine coolant (antifreeze) Rotating Ring: Ceramic / Silicon Carbide Stationary Ring: Hot-pressed graphite / Machined graphite / Silicon Carbide Auxiliary Seals: NBR (Nitrile Rubber) / EPDM (Ethylene Propylene Diene Monomer) / HNBR (Hydrogenated Nitrile Rubber) / FKM (Fluoroelastomer) Springs & Metal Components: Stainless Steel