Synertech Stock
Product codes
Details
CSC series rod seals are single-lip dynamic sealing elements designed to operate on the rods of hydraulic cylinders with reciprocating linear motion. The solid-section profile ensures geometric stability inside the housing machined into the cylinder head, while the polyurethane material generates the radial preload required to prevent fluid leakage towards the outside even at low pressures.
CSC Standard Type
Solid-section single-acting rod profile, with lip geometry optimized for fluid sealing during linear motion and for reducing stick-slip.
CSC/E Special Type
Variant with reinforced anti-extrusion profile or special high-hardness compound, developed for heavy-duty telescopic cylinders and applications characterized by high back-pressure peaks.
Materials and operating conditions
| Material | Compound | Speed | Temperature | Max pressure |
|---|---|---|---|---|
| Polyurethane | Tecnolan 90 Shore A (P0) | Up to 0.5 m/s | −40 / +110 °C |
Up to 25.0 MPa 250 bar continuous, depending on radial clearance |
Seal body
Mineral hydraulic oils, cutting lubricating oils, hydrocarbon-based mineral and synthetic greases and biodegradable hydraulic fluids.
Main features
Asymmetric dynamic lip
The CSC profile features a short and robust inner lip designed to operate at pressures up to 250 bar, while maintaining seal stability inside the housing.
Elastic recovery
The compact polyurethane body provides high elastic recovery. Under hydraulic load, it helps compensate for rod micro-deflections and misaligned radial loads.
Preloaded sealing at zero bar
The calibrated lip geometry maintains contact with the rod surface even in the absence of internal pressure, helping to prevent static leakage when the circuit is idle.
Advantages of the CSC profile
Dynamic sealing
The profile allows direct use on single- or double-acting cylinders, helping to contain external leakage and protect the internal guides.
Abrasion resistance
The 90 Shore A hardness provides high resistance to wear during sliding on the chrome-plated rod, limiting localized wear and the risk of scoring.
Installation in closed grooves
The elasticity of polyurethane allows the seal to be deformed to facilitate insertion into the internal grooves of the cylinder head.
Typical applications
- Linear hydraulic cylinders for earth-moving machinery, excavators and wheel loaders
- Telescopic lifting cylinders for tipper trucks and logistics loading ramps
- Industrial hydraulic presses, metal shears and medium-to-high-pressure linear actuators
- Lifting systems for agriculture, tractors, construction machinery and forklifts
- Mobile hydraulics and heavy-duty pneumatic automation systems with lubricated rods
International standards
Nominal dimensions, radial geometric tolerances and surface roughness Ra / Rz in accordance with international standards for cylinder seal housings ISO 5597 and ISO 6195.
Available configurations
CSC Standard
Configuration suitable for industrial cylinders and light- and heavy-duty mobile hydraulic applications, particularly for use with mineral oils.
CSC Premium
Configuration manufactured by CNC machining using advanced materials such as H-PU, hydrolysis-resistant polyurethane, or filled PTFE.
Market equivalents
| Manufacturer / Distributor | CSC Standard Type - Polyurethane |
|---|---|
| Net Seals | CSC Rod Seal Series |
| Sixten | Sixten CSC Polyurethane Profile |
| Gapi (Miros) | CSC PU Seal Reference |
| Tecnolan | TTS / TTS-L Profile Series (equivalent geometries) |