{"id":1506,"date":"2026-05-11T16:47:38","date_gmt":"2026-05-11T08:47:38","guid":{"rendered":"http:\/\/8.211.42.149\/?post_type=products&p=1506"},"modified":"2026-06-02T17:08:24","modified_gmt":"2026-06-02T09:08:24","slug":"p30","status":"publish","type":"products","link":"https:\/\/walleglobal.com\/de\/products\/p30\/","title":{"rendered":"P30"},"content":{"rendered":"
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P30<\/h2>\n<\/div>\n\n\n\n
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Max pressure<\/td>400 Bar<\/td><\/tr>
Temp range<\/td>-30\u00b0C~100\u00b0C<\/td><\/tr>
Max speed<\/td>5m\/sec<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n
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Product Overview<\/strong><\/div>
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The P30 type seal is a two-piece combined coaxial seal specially designed for hydraulic piston single-side sealing. It consists of a profiled PTFE slip ring and an elastic O-ring serving as the preloading element. Available in NBR and FKM elastic material options, the product complies with ISO 7425\/1 standard groove specifications for piston installation and supports piston rod design referencing the ISO 3320 standard. With excellent comprehensive performance, it is suitable for various medium and high-pressure hydraulic systems under complex and harsh working conditions.<\/p>\n<\/div><\/div>\n<\/div><\/div>\n\n\n\n

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Material Characteristics<\/strong><\/div>
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  • PTFE (Polytetrafluoroethylene)<\/strong>: Features ultra-low friction coefficient, excellent wear resistance and outstanding thermal conductivity. It operates smoothly without hydraulic crawling, maintains stable dynamic sealing for a long time, and possesses superior extrusion resistance to adapt to high-pressure harsh working conditions.<\/li>\n\n\n\n
  • NBR (Nitrile Butadiene Rubber)<\/strong>: Standard elastic material with good elasticity, stable preload performance and excellent medium resistance to common hydraulic oil, suitable for conventional temperature and standard industrial working conditions.<\/li>\n\n\n\n
  • FKM (Fluororubber)<\/strong>: High-performance alternative material with high temperature resistance, oil resistance and chemical corrosion resistance, applicable to high-temperature, corrosive and more severe working scenarios.<\/li>\n<\/ul>\n<\/div><\/div>\n<\/div><\/div>\n\n\n\n
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    Structural & Performance Advantages<\/strong><\/div>
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    • Professional Single-side Piston Sealing<\/strong>: Optimized for piston single-side sealing working conditions, providing accurate and stable one-way sealing and pressure maintaining effect for hydraulic piston systems.<\/li>\n\n\n\n
    • Standardized Design<\/strong>: Manufactured in accordance with ISO 7425\/1 standard piston groove dimensions; piston rod assembly can refer to ISO 3320 standard, featuring strong versatility and interchangeability, easy for installation and replacement.<\/li>\n\n\n\n
    • Excellent Pressure Stability Under Harsh Conditions<\/strong>: The combination of rigid PTFE slip ring and elastic preloaded O-ring ensures stable sealing pressure output, maintaining excellent pressure resistance and sealing stability under continuous variable load and harsh working environments.<\/li>\n\n\n\n
    • Superior Extrusion Resistance<\/strong>: The high-rigidity PTFE profile structure effectively resists high-pressure extrusion deformation, prevents gap extrusion damage, and adapts to high-pressure and large-gap working conditions.<\/li>\n\n\n\n
    • Excellent Thermal Conductivity<\/strong>: PTFE material with good thermal conductivity can quickly dissipate friction heat generated during equipment operation, avoid local high temperature aging of the seal, and prolong service life.<\/li>\n\n\n\n
    • Low Friction & No Hydraulic Crawling<\/strong>: Ultra-low friction and self-lubricating properties ensure smooth piston reciprocating movement, eliminate jitter and crawling phenomena, and improve equipment operation precision and stability.<\/li>\n\n\n\n
    • High Wear Resistance<\/strong>: The PTFE sliding ring effectively reduces friction loss, resists long-term operational wear, and greatly improves the durability of the seal under frequent cyclic working conditions.<\/li>\n<\/ul>\n<\/div><\/div>\n<\/div><\/div>\n\n\n\n
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      Application Scope<\/strong><\/div>
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      Widely used in handling equipment, agricultural machinery, injection molding machines, hydraulic presses, marine hydraulic equipment, industrial vehicles, cranes, grinding machines and control and regulation equipment. It is an ideal sealing solution for various medium-pressure, low-friction and high-durability hydraulic systems.<\/p>\n<\/div><\/div>\n<\/div><\/div>\n<\/div>\n<\/div><\/div>\n\n\n\n

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