CFKS Heavy Duty DK Type Oil Seal 30*8*18 DK Piston Seal NBR DK Rubber Skeleton Oil Seal
The CFKS 30*8*18 DK Type Piston Seal is engineered to maintain system pressure and prevent fluid migration in pneumatic and medium-duty hydraulic cylinders. Featuring a precision-molded rubber sealing profile reinforced with a robust skeleton core, this oil seal balances low sliding friction with positive lip contact, preventing seal blow-out and dynamic bypass under cyclic pressure changes.
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Heavy-Duty Profile: Integrated metal skeleton ensures tight housing fit and prevents seal distortion under pressure spikes.
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Low Dynamic Friction: Optimized sealing lip geometry minimizes stick-slip effect for smooth piston actuation.
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Versatile Fluid Compatibility: Standard NBR compound resists mineral-based hydraulic oils, grease, and air-lubricants.















