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Fluid power hydraulics - parts, accesories

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Polyurethane flange gaskets (temperature resistant)

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Temperature-resistant polyurethane flange gaskets

Polyurethane gaskets

These are specialized elements for flanges, sealing, used in power hydraulics installations where temperature resistance, pressure, and intensive operation are crucial. Polyurethane as a sealing material is characterized by high mechanical strength and good flexibility, allowing for effective sealing of flange connections even in difficult operating conditions. Compared to classic rubber gaskets, polyurethane gaskets show better resistance to abrasion, deformation, and material aging, which is why they are widely used in industrial and hydraulic installations.

Application of polyurethane gaskets in power hydraulics

Polyurethane flange gaskets are used in:

  • power hydraulics systems,

  • flange connections of hydraulic hoses,

  • industrial installations operating at elevated temperatures,

  • systems exposed to pressure fluctuations and dynamic loads.

Thanks to their design and material properties, polyurethane gaskets ensure the tightness of flange connections and the operational stability of the entire hydraulic system.

Temperature resistance and material durability

One of the key advantages that distinguish polyurethane gaskets, is their resistance to temperature and operational factors. Polyurethane retains its mechanical properties over a wide temperature range, allowing for safe use of gaskets in installations exposed to heating of the working medium. Properly selected polyurethane flange gaskets reduce the risk of leaks, hydraulic oil leakage, and pressure drops in the system.

How to choose polyurethane gaskets for flanges

Selection of a polyurethane gasket should take into account:

  • diameter and type of flange,

  • operating pressure parameters,

  • operating temperature range,

  • type of working medium.

Proper selection of polyurethane gaskets has a direct impact on the tightness of connections and the long-term, safe operation of the hydraulic installation. Polyurethane gaskets are a complementary element of flange connection systems in power hydraulics. Depending on the installation design, the offer from Hydron also includes flange gaskets made of other materials, as well as hydraulic flanges, enabling safe connection of high-pressure hoses. The installation can also be complemented by hydraulic hose ends, which, in combination with properly selected polyurethane gaskets, ensure the tightness and reliability of the entire system.

Technical data of the gaskets 

  • Material: Polyurethane (Shore A: 93 / 95ShA)
  • Temperature range: -35°C +110°C
  • Pressure: 420 bar (42 MPa)
  • manufactured according to SAE J 518
  • resistant to: mineral oils and greases

Q-ring gaskets are very durable and stand out for:

  • low degree of deformation under pressure
  • high degree of abrasion resistance
  • high degree of extrusion resistance
  • long service life
  • simple installation
  • possibility of use even on rough surfaces