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    Trelleborg polyurethane seals for fluid power: retrofit notes for mining engineers

    June 17, 2026|

    Reviewed by Tom Sullivan

    Trelleborg polyurethane seals for fluid power: retrofit notes for mining engineers

    First reported on Australian Mining

    30 Second Briefing

    Trelleborg has launched a new inch-size polyurethane sealing line for light-, medium- and heavy-duty hydraulic cylinders, covering piston, rod and buffer seals plus wipers for linear hydraulic applications. The Zurcon RU9 and Zurcon U-Cup RU9 profiles are engineered to retrofit directly into common American groove sizes in OEM and replacement equipment, targeting mining and other mobile hydraulics. For maintenance and design engineers, the inch-based range simplifies specifying high-performance PU seals without re-machining existing cylinder hardware.

    Technical Brief

    • Sealing set covers piston, rod, buffer and wiper functions, enabling single-supplier cylinder sealing packages.

    Our Take

    Australian Mining’s recent coverage of heavy-haul rail (Martinus) and contractor EPC-style packages (Glencore-linked item) signals sustained investment in high-duty mobile and fixed plant, a context where improved fluid power sealing can directly reduce downtime and maintenance exposure.

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    Prepared by collating external sources, AI-assisted tools, and Geomechanics.io’s proprietary mining database, then reviewed for technical accuracy & edited by our geotechnical team.

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