The Carlock CP04-P is a premium asymmetric single-acting piston seal engineered for high-pressure hydraulic applications up to 700 bar. Featuring an integrated O-Ring energizer and an active back-up ring, it ensures a constant preload and exceptional anti-extrusion performance across a wide temperature range. Its asymmetric design, with a shorter dynamic lip, guarantees excellent static and dynamic sealing for shifting, clamping, and positioning functions.
•Asymmetric single acting piston seal, with dynamic sealing lip being shorter than static one；
• O-ring in groove acts as energizer and creates preload；
• Interference fit on inside diameter；
• Various materials available for different purposes；
• Snaps into simple grooves (see notes on installation)；
• Best sealing effect across wide temperature range；
• Active back up ring on low-pressure side of seal reduces extrusion and allows larger gap dimensions resp. higher system pressure；
• For pressure up to 700 bar as seal between pressurized space and atmosphere；
• Good sealing in low pressure ranges；
• Excellent static and dynamic sealing；
• Suitable for short stroke applications；
• Recommended when holding or positioning under pressure；
• No reverse leakage (i.e. minor relative motion of sealing edges when direction is changed)；
• For shorter seal heights CP04-PD profile is recommended；
Leveraging our advanced CNC machining technology, Carlock provides 24-hour rapid delivery on both standard and custom-engineered dimensions, offering a high-end and faster alternative to international brands. The CP04-P stands out for its zero reverse leakage and superior reliability in short-stroke applications. With its robust sealing design and expert engineering support, it is the ideal choice for reciprocating pistons in heavy-duty hydraulic cylinders, clutch operations, and high-precision industrial systems.
