Rod Seal (U-Cup asymmetrical, inner sealing), SNI, SNI, Freudenberg Sealing Technologies (Dichtomatik)
Universal equipmentPrice on request
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Description
Asymmetrical U-cup rod seal with inner sealing lip. Function: Seals reciprocating rod against housing; prevents fluid escape. Installation: Defined by ID (rod dia.) x AD (groove dia.) x L (width). Example: SNI30: 40 x 50 x 9 mm. Pressure: Primary seal subject to full system pressure; secondary seal reduces residual oil film. Dynamics: Hydrodynamic lubrication film ensures low friction. Materials: NBR, TPU, PTFE, hard fabric, fabric NBR. Temperature: Material dependent.
Possible Applications
This asymmetrical U-cup rod seal is engineered for integration into linear hydraulic actuators powering mobile heavy equipment, including hydraulic excavators, telehandlers, and agricultural harvesting machinery. Within industrial plant environments, it serves in the primary seal gland of reciprocating cylinders driving metal forming presses, plastic injection molding machines, and hydraulic scissor lifts. The asymmetrical profile concentrates radial contact force on the inner sealing lip, providing superior dynamic sealing along reciprocating piston rods during high-frequency stroke cycles and pressure spikes. Additionally, this design is widely utilized in double-acting hydraulic cylinders for material handling fork trucks and earthmoving attachments where consistent fluid retention and contamination prevention are required.
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Specifications
| Category | Universal equipment |
| Product ID | 8211110032-5041 |
