Piston Seal (U-Cup asymmetrical, outer sealing), KNA, KNA, Freudenberg Sealing Technologies (Dichtomatik)
Universal equipmentPrice on request
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Description
Asymmetrical U-cup piston seal with outer sealing lip. Function: Seals piston against cylinder barrel; pressure-activated. Installation space: Defined by AD (cylinder dia.) x ID (groove dia.) x L (width). Example: KNA28: 50 x 40 x 8 mm. Materials: NBR, TPU, PTFE, hard fabric, fabric NBR. Pressure: Dynamic sealing lip pressure = preload + system pressure. Surface: Groove base radiused corners, rounded flank transitions, Ra values as per ISO. Certifications: Industrial standard; not for automotive/aerospace.
Possible Applications
This asymmetrical U-cup piston seal is primarily utilized in medium to heavy-duty hydraulic cylinders found in agricultural machinery like tractors and harvesters, as well as construction equipment such as excavators and front loaders. It is also highly suited for industrial manufacturing machinery, including hydraulic presses, plastic injection molding machines, and metal-forming presses where reliable linear actuation is critical. The outer-sealing design ensures optimal contact force against the cylinder bore during reciprocating motion, effectively preventing fluid bypass under fluctuating operating pressures. Additionally, the seal is commonly integrated into material handling equipment and factory automation systems that rely on pneumatic or hydraulic actuators for precise positioning.
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Specifications
| Category | Universal equipment |
| Product ID | 8010511511-5038 |
