X-Rings / JF4® sealing rings

The JF4® quadrilobe ring, or X-seal, is characterised by a four-lobed cross-section providing a double sealing line. It is suitable for hydraulic, pneumatic and oleopneumatic systems involving reciprocating motion. The X-seal is particularly effective in dynamic systems with slow rotary or reciprocating motion.

Main Benefits

Tailor-made solutions: component design and elastomer compound formulation
Dual sealing line with four-lobe section
Reciprocating movements up to 150 bar, rotary movements up to 1 m/s
No specific installation orientation required
Reduced friction and start-up torque
Eliminates the risk of torsion

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Applications

Hydraulic, pneumatic and hydro-pneumatic systems
Dynamic applications: reciprocating and rotary motion
Static applications
Heating, Ventilation and Air Conditioning (HVAC)
Engine
Steering and transmission
Filtration and cooling
Battery
Multi-way valves

Characteristics

Elastomer compounds: EPDM, FKM, NBR, HNBR, ACM, AEM, FFKM, butyl, silicone, fluorosilicone
Reciprocating movements up to 150 bar
Rotary movements up to 1 m/s
Standard compound 9PD31: black NBR, 78 Shore A, -30 °C to +100 °C continuous service, peak at +120 °C, DRC 15 % (24 h at 100 °C)
Mounting on its internal or external diameter

Strengths

Factories certified to ISO 16949, ISO 9001 and ISO 50001, with a global presence
Lubricant reservoir trapped between the lobes
Production in both small and large batches
Reduced start-up torque and lower wear
Optimal position of the parting line, no twisting
Standard blend available from stock
Certificates of conformity and inspection reports available on request